FlyingWhenever Thief of Sanity deals combat damage to a player, look at the top three cards of that player's library, exile one of them face down, then put the rest into their graveyard. You may cast that card for as long as it remains exiled, and mana of any type can be spent to cast that spell.
Whenever you cast a red spell, if Runaway Steam-Kin has fewer than three +1/+1 counters on it, put a +1/+1 counter on Runaway Steam-Kin.Remove three +1/+1 counters from Runaway Steam-Kin: Add .
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.)When Venerated Loxodon enters, put a +1/+1 counter on each creature that convoked it.
Whenever you cast an instant or sorcery spell, put a charge counter on Firemind's Research., Remove two charge counters from Firemind's Research: Draw a card., Remove five charge counters from Firemind's Research: It deals 5 damage to any target.
You may look at the top card of your library any time.You may play lands and cast spells from the top of your library.You can't play lands or cast spells from your hand.: Destroy Experimental Frenzy.
Undergrowth — Search your library for a black card with mana value less than or equal to the number of creature cards in your graveyard, reveal it, put it into your hand, then shuffle.
FlyingWhenever Thief of Sanity deals combat damage to a player, look at the top three cards of that player's library, exile one of them face down, then put the rest into their graveyard. You may cast that card for as long as it remains exiled, and mana of any type can be spent to cast that spell.
Create a token that's a copy of target creature you control.Jump-start (You may cast this card from your graveyard by discarding a card in addition to paying its other costs. Then exile this card.)
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.)When Venerated Loxodon enters, put a +1/+1 counter on each creature that convoked it.
Response deals 5 damage to target attacking or blocking creature.Creatures you control gain first strike and vigilance until end of turn. After this main phase, there is an additional combat phase followed by an additional main phase.
Choose a creature card with mana value 1 in your graveyard, then do the same for creature cards with mana value 2 and 3. Return those cards to the battlefield.
Copy target instant or sorcery spell with mana value 4 or less. You may choose new targets for the copy.Explosion deals X damage to any target. Target player draws X cards.
Put a +1/+1 counter on target creature. That creature gains indestructible until end of turn.Create three 2/2 green and white Elf Knight creature tokens with vigilance.
ReachUndergrowth — When you cast this spell, reveal the top X cards of your library, where X is the number of creature cards in your graveyard. You may put a green permanent card with mana value X or less from among them onto the battlefield. Put the rest on the bottom of your library in a random order.
Return up to two target creature cards from your graveyard to your hand.You may put two +1/+1 counters on a creature you control. Then all creatures get -4/-4 until end of turn.