Sisay, Weatherlight Captain gets +1/+1 for each color among other legendary permanents you control.

: Search your library for a legendary permanent card with mana value less than Sisay's power, put that card onto the battlefield, then shuffle.

Whenever Skanos Dragonheart attacks, it gets +X/+X until end of turn, where X is the greatest power among other Dragons you control and Dragon cards in your graveyard.

Choose a Background (You can have a Background as a second commander.)

Flying

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

: Skithiryx, the Blight Dragon gains haste until end of turn.

: Regenerate Skithiryx.

Haste

Whenever Skullbriar, the Walking Grave deals combat damage to a player, put a +1/+1 counter on it.

Counters remain on Skullbriar as it moves to any zone other than a player's hand or library.

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.

Whenever a Saproling you control dies, Slimefoot, the Stowaway deals 1 damage to each opponent and you gain 1 life.

: Create a 1/1 green Saproling creature token.

Eldrazi you control are Slivers in addition to their other types.

Slivers you control have devoid and have annihilator 1.

: Create a 1/1 colorless Eldrazi Sliver creature token. It has "Sacrifice this creature: Add ."

Sliver creatures you control have indestructible. (Damage and effects that say "destroy" don't destroy them.)

: Search your library for a Sliver card, reveal that card, put it into your hand, then shuffle.

: Gain control of target Sliver. (This effect lasts indefinitely.)

Slivers you control have flying and "Whenever you draw a card, this creature deals 1 damage to any target" and ": Draw a card."

, Sacrifice an artifact: Add an amount of equal to the sacrificed artifact's mana value. Spend this mana only to cast artifact spells or activate abilities of artifacts.

Slurrk, All-Ingesting enters the battlefield with five +1/+1 counters on it.

Whenever Slurrk or another creature you control dies, if it had a +1/+1 counter on it, put a +1/+1 counter on each creature you control that has a +1/+1 counter on it.

Partner (You can have two commanders if both have partner.)

Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)

Double strike

Whenever this creature mutates, it deals 4 damage to target creature or planeswalker an opponent controls and you gain 4 life.

At the beginning of your end step, choose one that hasn't been chosen —

• Draw a card.

• Each opponent loses 2 life and you gain 2 life.

• Sol'kanar the Tainted deals 3 damage to up to one other target creature or planeswalker.

• Exile Sol'kanar, then return it to the battlefield under an opponent's control.

When Sophia, Dogged Detective enters the battlefield, create Tiny, a legendary 2/2 green Dog Detective creature token with trample.

, Sacrifice an artifact token: Put a +1/+1 counter on each Dog you control.

Whenever a Dog you control deals combat damage to a player, create a Food token, then investigate.

Bird creatures get +1/+1.

: Target Bird creature gains banding until end of turn. (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding a player controls are blocking or being blocked by a creature, that player divides that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

Whenever Soul of Windgrace enters the battlefield or attacks, you may put a land card from a graveyard onto the battlefield tapped under your control.

, Discard a land card: You gain 3 life.

, Discard a land card: Draw a card.

, Discard a land card: Soul of Windgrace gains indestructible until end of turn. Tap it.

Ward

Whenever Sovereign Okinec Ahau attacks, for each creature you control with power greater than that creature's base power, put a number of +1/+1 counters on that creature equal to the difference.

Reach

When Spinnerette, Arachnobat enters the battlefield, open an Attraction.

As long as you control three or more Attractions, Spinnerette gets +2/+0 and has menace.

Haste

Whenever Squee, Dubious Monarch attacks, create a 1/1 red Goblin creature token that's tapped and attacking.

You may cast Squee, Dubious Monarch from your graveyard by paying and exiling four other cards from your graveyard rather than paying its mana cost.

You may cast Squee, the Immortal from your graveyard or from exile.

At the beginning of each opponent's upkeep, that player loses 1 life for each card fewer than three in their hand.

Whenever Stangg, Echo Warrior attacks, create Stangg Twin, a legendary 3/4 red and green Human Warrior creature token. It enters the battlefield tapped and attacking. For each Aura and Equipment attached to Stangg, create a token that's a copy of it attached to Stangg Twin. Sacrifice all tokens created this way at the beginning of the next end step.

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

Flying

Whenever you draw a card, if you're the monarch, target opponent loses 2 life.

Whenever one or more creatures deal combat damage to you, convert Starscream.

As Stenn, Paranoid Partisan enters the battlefield, choose a card type other than creature or land.

Spells you cast of the chosen type cost less to cast.

: Exile Stenn. Return it to the battlefield under its owner's control at the beginning of the next end step.

, : Each player mills three cards. Exile up to two creature cards put into graveyards this way. Create an X/X blue Zombie creature token, where X is the total power of the cards exiled this way.

Trample

Whenever Storrev, Devkarin Lich deals combat damage to a player or planeswalker, return to your hand target creature or planeswalker card in your graveyard that wasn't put there this combat.

Vigilance, trample

Grenades — , , Sacrifice an artifact: Choose a player at random. When you do, Strax fights another target creature that player controls.

Glory of Battle — Whenever Strax deals damage to a creature, put a +1/+1 counter on Strax.

Landfall — Whenever a land enters the battlefield under your control, target creature gets +1/+1 until end of turn. Then if that creature has power 4 or greater, it gains first strike until end of turn.

When Student of Elements has flying, flip it.

Horsemanship (This creature can't be blocked except by creatures with horsemanship.)

When Sun Ce, Young Conquerer enters the battlefield, you may return target creature to its owner's hand.

: Add .

Trample

Other creatures you control have trample.

Whenever another nontoken creature enters the battlefield under your control, put a +1/+1 counter on it. It gains haste until end of turn.

Formidable — At the beginning of combat on your turn, if creatures you control have total power 8 or greater, target creature you control gains haste until end of turn.

, : Create a colorless snow artifact token named Icy Manalith with ": Add one mana of any color."

, : Look at the top four cards of your library. You may cast a spell from among them without paying its mana cost. Put the rest on the bottom of your library in a random order.

: Target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value until end of turn.

: Target artifact creature gains deathtouch and lifelink until end of turn.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)

: Target Merfolk you control gains protection from the color of your choice until end of turn.

First strike

Whenever Syr Alin, the Lion's Claw attacks, other creatures you control get +1/+1 until end of turn.

Knightlifelink (Damage dealt by Knights you control also causes you to gain that much life.)

: Syr Cadian, Knight Owl gains vigilance until end of turn. Activate only from sunrise to sunset.

: Syr Cadian, Knight Owl gains flying until end of turn. Activate only from sunset to sunrise.

Syr Elenora, the Discerning's power is equal to the number of cards in your hand.

When Syr Elenora enters the battlefield, draw a card.

Spells your opponents cast that target Syr Elenora cost more to cast.

Syr Ginger, the Meal Ender has trample, hexproof, and haste as long as an opponent controls a planeswalker.

Whenever another artifact you control is put into a graveyard from the battlefield, put a +1/+1 counter on Syr Ginger and scry 1.

, , Sacrifice Syr Ginger: You gain life equal to its power.

Whenever another creature dies, or a creature card is put into a graveyard from anywhere other than the battlefield, or a creature card leaves your graveyard, Syr Konrad, the Grim deals 1 damage to each opponent.

: Each player mills a card. (They each put the top card of their library into their graveyard.)

Whenever you cast an enchantment spell, you gain 1 life and draw a card.

Flying

My Will Be Done — Whenever Szarekh, the Silent King attacks, mill three cards. You may put an artifact creature card or Vehicle card from among the cards milled this way into your hand.

Tahngarth, First Mate can't be blocked by more than one creature.

Whenever an opponent attacks with one or more creatures, if Tahngarth is tapped, you may have that opponent gain control of Tahngarth until end of combat. If you do, choose a player or planeswalker that opponent is attacking. Tahngarth is attacking that player or planeswalker.

Instant, sorcery, and Dragon spells you control can't be countered.

Whenever you cast an instant or sorcery spell from your hand, if Taigam, Ojutai Master attacked this turn, that spell gains rebound. (Exile the spell as it resolves. At the beginning of your next upkeep, you may cast that card from exile without paying its mana cost.)

Whenever a source you control deals noncombat damage to a creature equal to that creature's toughness, draw a card.

, : If a source you control would deal noncombat damage to a permanent or player this turn, it deals that much damage plus X instead.

Indestructible

Battalion — Whenever Tajic, Blade of the Legion and at least two other creatures attack, Tajic gets +5/+5 until end of turn.

Bushido 2 (Whenever this creature blocks or becomes blocked, it gets +2/+2 until end of turn.)

Each other Samurai creature you control gets +1/+1 for each point of bushido it has.