cards that shuffle graveyard into deck mtg Can I my my library in response to an exile spell? and conquest mtg card that shuffles graveyard

Legendary Creature - Scout Halfling Color tag templates(None) Sam, Loyal Attendant Partner with Frodo, Adventurous Hobbit (When this creature enters, target player may put Frodo into their hand from their library, then shuffle.) At the beginning of combat on your turn, create a Food token

Electrodominance into Haphazard Bombardment/In Bolass Clutches/Lichs Mastery/Niv Mizzet/Rivers Rebuke/Sunbirds Invocation/The Immortal Sun/Vraska, Relic Seeker

While the contract is very much not a demon in and of itself, its a five mana Black Enchantment

3: Draw three cards, then discard two cards

Hideous Taskmaster is another expensive creature with middling stats, but is one of the better Threaten effects, as giving the temporarily stolen creature annihilator 1 and trample can be quite a scary proposition