At the beginning of your upkeep, sacrifice School of Piranha unless you pay .

: Add .

At the beginning of each upkeep, if no spells were cast last turn, transform Scorned Villager.

At the beginning of your upkeep, each player draws a card.

Whenever an opponent draws a card, that player loses 1 life.

Scrounging Bandar enters with two +1/+1 counters on it.

At the beginning of your upkeep, you may move any number of +1/+1 counters from Scrounging Bandar onto another target creature.

At the beginning of each upkeep, you may exile target creature card from your graveyard. If you do, create a token that's a copy of that card, except it's a Spirit in addition to its other types. Exile it at the beginning of the next end step.

Search your library for a basic land card, put it onto the battlefield, then shuffle.

Suspend 2— (Rather than cast this card from your hand, you may pay and exile it with two time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)

At the beginning of your upkeep, if you have 5 or less life, sacrifice Second Chance and take an extra turn after this one.

At the beginning of each player's upkeep, that player loses 2 life and draws two cards.

Kinship — At the beginning of your upkeep, you may look at the top card of your library. If it shares a creature type with Sensation Gorger, you may reveal it. If you do, each player discards their hand, then draws four cards.

Flying

At the beginning of your upkeep, Serendib Efreet deals 1 damage to you.

Enchant creature

At the beginning of your upkeep, sacrifice Serra Bestiary unless you pay .

Enchanted creature can't attack or block, and its activated abilities with in their costs can't be activated.

At the beginning of your upkeep, you may put a verse counter on Serra's Liturgy.

, Sacrifice Serra's Liturgy: Destroy up to X target artifacts and/or enchantments, where X is the number of verse counters on Serra's Liturgy.

Target creature an opponent controls perpetually gets -2/-2 and gains "At the beginning of each upkeep, this creature perpetually gets -1/-1."

Flash

At the beginning of your upkeep, each player mills three cards. You may exile a creature card from among the cards milled this way. If you do, Shadow Kin becomes a copy of that card, except it has this ability.

Flying

When Shadowborn Demon enters, destroy target non-Demon creature.

At the beginning of your upkeep, if there are fewer than six creature cards in your graveyard, sacrifice a creature.

Enchant creature

When Shape of the Wiitigo enters, put six +1/+1 counters on enchanted creature.

At the beginning of your upkeep, put a +1/+1 counter on enchanted creature if it attacked or blocked since your last upkeep. Otherwise, remove a +1/+1 counter from it.

At the beginning of each opponent's upkeep, that player reveals the top card of their library. If it's a creature card, the player puts the card into their graveyard and Shapeshifter's Marrow becomes a copy of that card. (If it does, it loses this ability.)

If Sheltered Valley would enter, instead sacrifice each other permanent named Sheltered Valley you control, then put Sheltered Valley onto the battlefield.

At the beginning of your upkeep, if you control three or fewer lands, you gain 1 life.

: Add .

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

At the beginning of your upkeep, return target creature card from your graveyard to the battlefield.

At the beginning of each opponent's upkeep, that player sacrifices a creature of their choice.

Flying

At the beginning of your upkeep, return up to one other target enchantment you control to its owner's hand.

Shivan Meteor deals 13 damage to target creature.

Suspend 2— (Rather than cast this card from your hand, you may pay and exile it with two time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)

At the beginning of each player's upkeep, that player adds . Until end of turn, they don't lose this mana as steps and phases end.

At the beginning of your upkeep and whenever you cast a green spell, put a charge counter on Shrine of Boundless Growth.

, Sacrifice Shrine of Boundless Growth: Add for each charge counter on Shrine of Boundless Growth.

At the beginning of your upkeep and whenever you cast a black spell, put a charge counter on Shrine of Limitless Power.

, , Sacrifice Shrine of Limitless Power: Target player discards a card for each charge counter on Shrine of Limitless Power.

At the beginning of your upkeep and whenever you cast a blue spell, put a charge counter on Shrine of Piercing Vision.

, Sacrifice Shrine of Piercing Vision: Look at the top X cards of your library, where X is the number of charge counters on Shrine of Piercing Vision. Put one of those cards into your hand and the rest on the bottom of your library in any order.

Target player in an Un-game you can see from your seat gains control of target creature you control until your next turn. At the beginning of your next upkeep, put two +1/+1 counters on that creature. (A creature is on the battlefield of only the game its controller is playing.)

Look at the top two cards of your library. Put one of them into your hand and the other on the bottom of your library.

Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

Whenever Silverpelt Werewolf deals combat damage to a player, draw a card.

At the beginning of each upkeep, if a player cast two or more spells last turn, transform Silverpelt Werewolf.

: Put a +1/+1 counter on target creature you control.

Whenever one or more +1/+1 counters are put on a creature you control, put that many growth counters on Simic Ascendancy.

At the beginning of your upkeep, if Simic Ascendancy has twenty or more growth counters on it, you win the game.

When Sinister Concierge dies, you may exile it and put three time counters on it. If you do, exile up to one target creature and put three time counters on it. Each card exiled this way that doesn't have suspend gains suspend. (For each card with suspend, its owner removes a time counter from it at the beginning of their upkeep. When the last is removed, they may cast it without paying its mana cost. Those creature spells have haste.)

At the beginning of your upkeep, flip a coin. If you lose the flip, turn Skittish Valesk face down.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

At the beginning of your upkeep, you lose 1 life and create a 1/1 colorless Phyrexian Mite artifact creature token with toxic 1 and "This creature can't block."

Corrupted — As long as an opponent has three or more poison counters, creatures you control with toxic have lifelink.

At the beginning of each opponent's upkeep, Skullcage deals 2 damage to that player unless they have exactly three or exactly four cards in hand.

Fading 2 (This creature enters with two fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can't, sacrifice it.)

Skyshroud Behemoth enters tapped.

Destroy target nonblack creature.

At the beginning of your next upkeep, pay . If you don't, you lose the game.

More Than Meets the Eye (You may cast this card converted for .)

Double strike, haste

At the beginning of each opponent's upkeep, you may have that player gain control of Slicer until end of turn. If you do, untap Slicer, goad it, and it can't be sacrificed this turn. If you don't, convert it.

Flash

All creatures have shroud. (They can't be the targets of spells or abilities.)

At the beginning of your upkeep, sacrifice Smoke Bomb. When you do, target creature you control can't be blocked this turn.

At the beginning of your upkeep, target player loses 1 life.

Sacrifice Smoldering Tar: It deals 4 damage to target creature. Activate only as a sorcery.

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

Whenever an Island is tapped for mana, its controller may add an additional . If that Island is snow, its controller may add an additional instead. Spend this mana only to pay cumulative upkeep costs.

Suspend 3— (Rather than cast this card from your hand, pay and exile it with three time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)

: Add .

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

: Soldevi Simulacrum gets +1/+0 until end of turn.

At the beginning of your upkeep, sacrifice Solitary Confinement unless you discard a card.

Skip your draw step.

You have shroud. (You can't be the target of spells or abilities.)

Prevent all damage that would be dealt to you.

+1: Until your next turn, creatures you control get +1/+0 and gain lifelink.

−2: Create a 2/2 black Vampire creature token with flying.

−6: You get an emblem with "At the beginning of each opponent's upkeep, that player sacrifices a creature of their choice."

Soul Echo enters with X echo counters on it.

You don't lose the game for having 0 or less life.

At the beginning of your upkeep, sacrifice Soul Echo if there are no echo counters on it. Otherwise, target opponent may choose that for each 1 damage that would be dealt to you until your next upkeep, you remove an echo counter from Soul Echo instead.

Trample

Delirium — At the beginning of your upkeep, if there are four or more card types among cards in your graveyard, put three +1/+1 counters on Soul Swallower.

Vanishing 1 (This creature enters with a time counter on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)

Whenever another creature you control enters, put a time counter on Soultether Golem.

Spectacle (You may cast this spell for its spectacle cost rather than its mana cost if an opponent lost life this turn.)

Flying, trample

At the beginning of your upkeep, Spawn of Mayhem deals 1 damage to each player. Then if you have 10 or less life, put a +1/+1 counter on Spawn of Mayhem.

Sphere of Annihilation enters with X void counters on it.

At the beginning of your upkeep, exile Sphere of Annihilation, all creatures and planeswalkers with mana value less than or equal to the number of void counters on it, and all creature and planeswalker cards in graveyards with mana value less than or equal to the number of void counters on it.

Flying

At the beginning of each of your postcombat main phases, there is an additional beginning phase after this phase. (The beginning phase includes the untap, upkeep, and draw steps.)

At the beginning of your upkeep, if there are no Reflection tokens on the battlefield, create a 2/2 white Reflection creature token.

: Destroy target Reflection.