Doomsday (Invocation) [Amonkhet Invocations] SV19 Once per turn: You can

Once per turn: You can declare a card type (Spell

If this card is Special Summoned: You can send cards from the top of your Deck to the GY

if this monster that is not co-linked battles an opponent's monster (Quick Effect): You can make that opponent's monster's ATK 0 during that damage calculation only

This face-up card on the field cannot be Tributed

When the equipped monster destroys an opponent's monster by battle

Doomsday (Invocation) [Amonkhet Invocations] SV19 Once per turn: You canSet: Amonkhet Invocations 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.