Doomsday [Masters 25] SM161 but down here you belong

but down here you belong to me

−7: You gain X life and draw X cards

Set: Aether Revolt Prerelease Promos Type: Artifact Creature — Construct Rarity: Rare Cost: {X}{X} Walking Ballista enters the battlefield with X +1/+1 counters on it

you can Normal Summon it to have it treated as an Effect Monster with this effect:

Set: Crimson Crisis Card type: Spell Rarity: Super Rare Tribute 1 face-up Kuriboh

Doomsday [Masters 25] SM161 but down here you belongSet: Masters 25 Type: Sorcery Rarity: Mythic Cost: {B}{B}{B} Search your library and graveyard for five cards and exile the rest. Put the chosen cards on top of your library in any order. You lose half your life, rounded up.