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

When this creature enters, tap up to one target creature. You gain life equal to that creature's power.

(Gain the next level as a sorcery to add its ability.) If you would gain life, you gain that much life plus 1 instead. {3}{W}: Level 2 Whenever you gain life, put a +1/+1 counter on target creature you control. {4}{W}: Level 3 When this Class becomes level 3, return target creature card from your graveyard to the battlefield. You gain life equal to that creature's toughness.

Mutate {3}{W} (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.) Vigilance Whenever this creature mutates, you gain 4 life.

Lifelink (Damage dealt by this creature also causes you to gain that much life.)

Cumulative upkeep {1} (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.) When this creature leaves the battlefield, you gain life equal to the number of age counters on it.

Flying Lifelink (Damage dealt by this creature also causes you to gain that much life.)

Whenever this creature attacks, creatures you control get +1/+1 until end of turn.

You gain X life and draw X cards, where X is the number of creatures you control. Creatures you control get +1/+1 until end of turn.

Draw a card for each creature you control with a +1/+1 counter on it. Those creatures gain indestructible until end of turn. (Damage and effects that say "destroy" don't destroy them.)

If a spell would deal damage to a permanent or player, it deals that much damage minus 1 to that permanent or player instead.

Prevent all noncombat damage that would be dealt to you and creatures you control. Whenever a nontoken creature you control enters, create a 2/2 white Unicorn creature token.

Exile any number of target creatures you control. Return those cards to the battlefield under their owner's control at the beginning of the next end step.

Enchant creature {2}{W}{W}: Exile enchanted creature and all Auras attached to it. At the beginning of the next end step, return that card to the battlefield under its owner's control. If you do, return the other cards exiled this way to the battlefield under their owners' control attached to that creature.

{2}, {T}: Exile another target creature you control. You may return that card to the battlefield under its owner's control. If you don't, at the beginning of the next end step, return that card to the battlefield under its owner's control with a vigilance counter and a lifelink counter on it.

Vigilance Lieutenant — At the beginning of combat on your turn, if you control your commander, prevent all combat damage that would be dealt to creatures you control this turn. Other creatures you control gain vigilance until end of turn.

Exile any number of target creatures and/or planeswalkers you control. At the beginning of the next end step, return each of them to the battlefield under its owner's control. Each of them enters with an additional +1/+1 counter on it if it's a creature and an additional loyalty counter on it if it's a planeswalker.

Exile target creature you control, then return that card to the battlefield under its owner's control. Draw a card.

Exile any number of creatures you control, then return them to the battlefield under their owner's control. Then repeat this process X more times.

Exile target creature you control, then return that card to the battlefield under your control.

Commander creatures you own have "At the beginning of your end step, exile up to one target tapped creature you control, then return it to the battlefield under its owner's control."

Exile target creature or enchantment, then return it to the battlefield under its owner's control.

Exile each creature you control. Return those cards to the battlefield under their owner's control at the beginning of the next end step.

Whenever Golden Argosy attacks, exile each creature that crewed it this turn. Return them to the battlefield tapped under their owner's control at the beginning of the next end step. Crew 1 (Tap any number of creatures you control with total power 1 or more: This Vehicle becomes an artifact creature until end of turn.)

Exile target creature you control, then return that card to the battlefield under its owner's control. It gains first strike until end of turn.

Exile all nontoken creatures you control, then roll a d20. 1—9 | Return those cards to the battlefield under their owner's control at the beginning of the next end step. 10—20 | Return those cards to the battlefield under their owner's control, then exile them again. Return those cards to the battlefield under their owner's control at the beginning of the next end step.

If an artifact or creature entering causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

Exile up to one target artifact, creature, or enchantment you control, then return it to the battlefield under its owner's control. Draw a card.

Flying Whenever this creature attacks, another target attacking creature gains flying until end of turn.

Flying Whenever this creature attacks, another target attacking creature without flying gains flying until end of turn.

All creatures able to block this creature do so.

Whenever another creature you control with power 2 or less enters, target creature you control gets +1/+1 until end of turn.

Whenever you gain life, put a +1/+1 counter on this creature.

Whenever another creature you control enters, put a +1/+1 counter on that creature.

Flying When this creature leaves the battlefield, choose an opponent who controls more lands than you. Search your library for a number of Plains cards equal to the difference, reveal those cards, put one of them onto the battlefield tapped and the rest into your hand, then shuffle.

You may play an additional land this turn. Draw a card.

Search your library for a Forest card, put that card onto the battlefield, then shuffle.

{T}: Add one mana of any color.

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

{T}: Add {C}{C}.

Flying When this creature enters, target creature gets +1/+1 and gains flying until end of turn.

When this creature enters, target creature gets +2/+0 until end of turn.

This land enters tapped. When this land enters, you gain 1 life. {T}: Add {G} or {W}.

{T}: Add one mana of any color in your commander's color identity.

({T}: Add {G}.)

This land enters tapped. {T}: Add {C}. {2}, {T}, Sacrifice this land: Search your library for up to two basic land cards that share a land type, put them onto the battlefield tapped, then shuffle.

({T}: Add {W}.)

Bestow {5}{G} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.) All creatures able to block this creature or enchanted creature do so. Enchanted creature gets +1/+1.

Gift a tapped Fish (You may promise an opponent a gift as you cast this spell. If you do, they create a tapped 1/1 blue Fish creature token before its other effects.) Exile target nontoken creature. If the gift wasn't promised, return that card to the battlefield under its owner's control with a +1/+1 counter on it at the beginning of the next end step.

Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Sacrifice this creature: Destroy target enchantment.