Corrupt deals damage to any target equal to the number of Swamps you control. You gain life equal to the damage dealt this way.

Flying, first strike

Target creature gets +3/-3 until end of turn.

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Whenever you cast a noncreature spell, target creature gets +X/+0 until end of turn, where X is that spell's mana value.
Choose a Background (You can have a Background as a second commander.)

Training (Whenever this creature attacks with another creature with greater power, put a +1/+1 counter on this creature.)
, Remove two +1/+1 counters from among creatures you control: Destroy target artifact or enchantment.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)
Return up to two target creature cards from your graveyard to your hand.

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Each other non-Human creature you control enters with an additional +1/+1 counter on it.

When Marina Vendrell enters, reveal the top seven cards of your library. Put all enchantment cards from among them into your hand and the rest on the bottom of your library in a random order.
: Lock or unlock a door of target Room you control. Activate only as a sorcery.

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Hellbent — As long as you have no cards in hand, this creature gets +1/+0 and has ": Regenerate this creature." (The next time it would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Exile target nonland card from your graveyard. Search your library for any number of cards with the same name as that card, reveal them, put them into your hand, then shuffle.

This land enters tapped.
When this land enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.)
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Target player discards two cards.

This land enters tapped.
, Sacrifice this land: Search your library for a Forest or Plains card, put it onto the battlefield, then shuffle.

If this creature would be destroyed, regenerate it.
: This creature can't be regenerated this turn. Only your opponents may activate this ability.

Gift a card (You may promise an opponent a gift as you cast this spell. If you do, they draw a card before its other effects.)
Return up to two target creature cards each with mana value 2 or less from your graveyard to the battlefield. If the gift was promised, instead return up to three target creature cards each with mana value 2 or less from your graveyard to the battlefield.

, Exile this card from your graveyard: Draw two cards, then discard a card.

Surveil 2, then draw two cards. Notion Rain deals 2 damage to you. (To surveil 2, look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)