Deathtouch Boast — {1}{B}: Target player searches their library for a card, then shuffles and puts that card on top. (Activate only if this creature attacked this turn and only once each turn.)

Destroy target creature or enchantment an opponent controls. You lose life equal to that permanent's mana value.

Equipped creature can't be blocked and has shroud. (It can't be the target of spells or abilities.) Equip {2}

This creature enters tapped. {1}{B}: Return this card from your graveyard to your hand. Activate only during your turn and only if an opponent lost life this turn.

{B}{B}, Pay 2 life, Sacrifice a Swamp: Return target creature card from your graveyard to the battlefield.

Until end of turn, all creatures become black and all lands become Swamps.