Target artifact or creature gains hexproof and indestructible until end of turn. Scry 1.

Other Merfolk get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)

When Lord Xander, the Collector enters, target opponent discards half the cards in their hand, rounded down.

Whenever Lord Xander attacks, defending player mills half their library, rounded down.

When Lord Xander dies, target opponent sacrifices half the nonland permanents they control, rounded down.

Vanishing 3 (This creature enters with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)

When Lost Auramancers dies, if it had no time counters on it, you may search your library for an enchantment card, put it onto the battlefield, then shuffle.

Undergrowth — When Lotleth Giant enters, it deals 1 damage to target opponent for each creature card in your graveyard.

Protection from modified creatures. (Modified creatures have a power, toughness, or ability different than their printed version.)

At the beginning of each player's end step, you may put a +1/+1 counter on target creature that player controls.

Whenever Lowland Basilisk deals damage to a creature, destroy that creature at end of combat.

: Target Goblin creature you control gets +1/+0 and gains flying until end of turn. Sacrifice that creature at the beginning of the next end step.

: Prevent the next 2 damage that would be dealt to any target this turn.

Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.)

Trample

Lieutenant — At the beginning of combat on your turn, if you control your commander, put a +1/+1 counter on each creature you control.

Flying

At the beginning of your end step, if a permanent you controlled left the battlefield this turn, put a +1/+1 counter on each tapped creature you control, then untap them.

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

Flying

At the beginning of your upkeep, you may create a 1/1 white Spirit creature token with flying.

Flying

Whenever another creature you control leaves the battlefield, you gain 1 life.

If Luminous Phantom would be put into a graveyard from anywhere, exile it instead.

Whenever another creature you control enters, you gain 1 life.

Disturb (You may cast this card from your graveyard transformed for its disturb cost.)

Humans you control gain indestructible until your next turn. (Then exile this card. You may cast the creature later from exile.)

: Put a charge counter on Lux Cannon.

, Remove three charge counters from Lux Cannon: Destroy target permanent.

Whenever you cast an Elf spell, you may create a 1/1 green Elf Warrior creature token.

Equipped creature gets +1/+1 for each charge counter on Mace of the Valiant and has vigilance.

Whenever a creature you control enters, put a charge counter on Mace of the Valiant.

Equip

Creatures you control have haste.

Cascade, cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order. Then do it again.)

Equipped creature gets +2/+4 and loses flying.

Prevent all noncombat damage that would be dealt to equipped creature.

Equip (: Attach to target creature you control. Equip only as a sorcery.)

When Mage's Attendant enters, create a 1/1 blue Wizard creature token with ", Sacrifice this creature: Counter target noncreature spell unless its controller pays ."

As long as there are four or more instant and/or sorcery cards in your graveyard, Magmatic Channeler gets +3/+1.

, Discard a card: Exile the top two cards of your library, then choose one of them. You may play that card this turn.

Spiritual Leader — At the beginning of combat on your turn, put a +1/+1 counter on target creature.

Psychic Stimulus — : Add . When you next cast a spell with in its mana cost or activate an ability with in its activation cost this turn, copy that spell or ability. You may choose new targets for the copy. (A copy of a permanent spell becomes a token.)

, : Untap X target lands.

Each opponent separates the creatures they control into two piles. For each opponent, you choose one of their piles. Each opponent sacrifices the creatures in their chosen pile. (Piles can be empty.)

Whenever a player casts a green spell, you may pay . If you do, untap target permanent.

Flying

Scavenge the Dead — When Malanthrope enters, exile target player's graveyard. Put a +1/+1 counter on Malanthrope for each creature card exiled this way.

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.)

At the beginning of your upkeep, put a growth counter on Malignant Growth.

At the beginning of each opponent's draw step, that player draws an additional card for each growth counter on Malignant Growth, then Malignant Growth deals damage to the player equal to the number of cards they drew this way.

If a player would add mana, instead all players add that mana.

Whenever a player casts a spell, that player returns a land they control to its owner's hand.

Whenever you cast a multicolored spell, Mana Cannons deals X damage to any target, where X is the number of colors that spell is.

You and target opponent each flip a coin. Mana Clash deals 1 damage to each player whose coin comes up tails. Repeat this process until both players' coins come up heads on the same flip.

At the beginning of your upkeep, flip a coin. If you lose the flip, Mana Crypt deals 3 damage to you.

: Add .

Counter target spell. At the beginning of your next main phase, add an amount of equal to that spell's mana value.

Add for each nonland permanent with art by the artist of your choice.

When Mana Geode enters, scry 1.

: Add one mana of any color.

Counter target spell unless its controller pays .

Instant and enchantment spells you cast cost less to cast.

: Add .

, : Add one mana of any color.

: Flip a coin. If you win the flip, add . Activate only as an instant.

Search your library for any number of land cards, exile them, then shuffle.

Flying

Whenever Mana Skimmer deals damage to a player, tap target land that player controls. That land doesn't untap during its controller's next untap step.

Lands target player controls don't untap during their next untap step.

When you cast this spell, counter it unless you sacrifice a land.

At the beginning of each player's upkeep, that player sacrifices a land.

When there are no lands on the battlefield, sacrifice Mana Vortex.

Whenever a player taps a land for mana, Manabarbs deals 1 damage to that player.

Flying, trample

Join forces — Whenever Mana-Charged Dragon attacks or blocks, each player starting with you may pay any amount of mana. Mana-Charged Dragon gets +X/+0 until end of turn, where X is the total amount of mana paid this way.

Domain — Equipped creature gets +1/+1 for each basic land type among lands you control.

Equip

Flying

Whenever you cast a noncreature spell, create an X/X red Dragon Illusion creature token with flying and haste, where X is the amount of mana spent to cast that spell. Exile that token at the beginning of the next end step.

Flying

Managorger Phoenix can't block.

Whenever you cast a spell, if Managorger Phoenix is in your graveyard, put a flame counter on Managorger Phoenix for each in that spell's mana cost. If Managorger Phoenix has five or more flame counters on it, return it to the battlefield and it perpetually gets +1/+1.