Doombot

Doctor Doom

When Doctor Doom enters, create two 3/3 colorless Robot Villain artifact creature tokens named Doombot.
As long as you control an artifact creature or a Plan, Doctor Doom has indestructible.
At the beginning of your end step, you draw a card and lose 1 life.

Doom Reigns Supreme

Whenever a Villain you control enters, each opponent loses 1 life and you gain 1 life. Put a plan counter on this enchantment.
When the fifth plan counter is put on this enchantment, sacrifice it. When you do, target opponent exiles the top five cards of their library. You may cast up to two spells from among the exiled cards without paying their mana costs.

Elektra, Daughter of the Hand

Sneak {1}{B}{B} (You may cast this spell for {1}{B}{B} if you also return an unblocked attacker you control to hand during the declare blockers step. She enters tapped and attacking.)
When Elektra enters, destroy target creature an opponent controls with power 3 or less.

Grim Reaper, Lethal Legionnaire

Whenever Grim Reaper attacks, you may pay {3}{B}. When you do, return target creature card from your graveyard to the battlefield tapped and attacking with a finality counter on it. (If a creature with a finality counter on it would die, exile it instead.)

Hour of Defeat

Destroy target creature. Surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

Marvel Super Heroes