Thief of Sanity

Flying

Whenever this creature deals combat damage to a player, that player exiles the top card of their library.

You may play lands and cast spells from among cards exiled with this creature.

Whenever a player casts a spell they don't own, that player creates a Treasure token.

Whenever a creature deals combat damage to one of your opponents, its controller looks at the top card of that opponent's library and exiles it face down. They may play that card for as long as it remains exiled. Mana of any type can be spent to cast a spell this way.

When The Magic Bandit deals combat damage to an opponent, exile the top card of that player's library. 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 spell or play a land you don't own, copy it.

Flying, deathtouch

Whenever you cast your first spell during each opponent's turn, look at the top card of that player's library, then exile it face down. You may play that card for as long as it remains exiled, and mana of any type can be spent to cast it.

(Gain the next level as a sorcery to add its ability.)

Whenever a creature you control deals combat damage to a player, exile the top card of that player's library face down. You may look at it for as long as it remains exiled.

: Level 2

Creatures you control have menace.

: Level 3

You may play cards exiled with this Class, and you may spend mana as though it were mana of any color to cast those spells.

Whenever this creature deals combat damage to a player, look at that many cards from the top of your library. Put one of them into your hand and the rest into your graveyard.

Find New Host — , Exile this card from your graveyard: Put a +1/+1 counter on target creature you control. It gains this card's other abilities. Activate only as a sorcery.