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.
Target opponent may have Risk Factor deal 4 damage to them. If that player doesn't, you draw three cards.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.)
Whenever another creature you control enters or dies, if that creature's power is greater than Pelt Collector's, put a +1/+1 counter on Pelt Collector.As long as Pelt Collector has three or more +1/+1 counters on it, it has trample.
Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)At the beginning of combat on your turn, create a 1/1 red Goblin creature token. That token gains haste until end of turn and attacks this combat if able.
ReachUndergrowth — When Kraul Harpooner enters, choose up to one target creature you don't control with flying. Kraul Harpooner gets +X/+0 until end of turn, where X is the number of creature cards in your graveyard, then you may have Kraul Harpooner fight that creature.
Other creatures you control get +1/+1.When Trostani Discordant enters, create two 1/1 white Soldier creature tokens with lifelink.At the beginning of your end step, each player gains control of all creatures they own.
HexproofYou can't cast noncreature spells.: Nullhide Ferox loses all abilities until end of turn. Any player may activate this ability.If a spell or ability an opponent controls causes you to discard Nullhide Ferox, put it onto the battlefield instead of putting it into your graveyard.