Geist of Regret

When Slayer's Bounty enters the battlefield, look at the creature cards in target opponent's hand. Whenever you sacrifice Slayer's Bounty or another Clue, draft a card from Slayer's Bounty's spellbook. 2, Sacrifice Slayer's Bounty: Draw a card.

Flying When this creature enters, it becomes day. It can't become night. Your opponents can't cast spells with mana value greater than the number of turns they have begun.

Flying, lifelink Whenever this creature enters and whenever you cast a party spell, choose a party creature card in your hand. It perpetually gets +1/+1. (A party card or spell is a Cleric, Rogue, Warrior, or Wizard.)

Double strike Spells cast from among cards you drew this turn cost 1 less to cast. Spells cast from among cards your opponents drew this turn cost 1 more to cast.

Exile all artifacts and creatures with mana value 3 or less. They perpetually gain "This spell costs 2 more to cast" and "This permanent enters the battlefield tapped." For as long as each of them remain exiled, its owner may play it.

Lifelink Whenever this creature enters or attacks, choose a card in your hand. It perpetually gains lifelink.

Whenever one or more Humans and/or Warriors you control enter, conjure a card named Utility Knife onto the battlefield. This ability triggers only once each turn.

Vigilance When Faithful Disciple dies, draft a card from Faithful Disciple's spellbook.