Magic The Gathering Cards of types 'Dreadnought' and 'Artifact'

Prototype {4}{U}{U} - 6/6 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.) This creature doesn't untap during your untap step. {3}: Untap this creature.

Haste Sarcophagus - You may cast this card from your graveyard by exiling another creature card from your graveyard in addition to paying its other costs.

Trample When this creature enters, sacrifice it unless you sacrifice any number of creatures with total power 12 or greater.

Fallen Warrior - As an additional cost to cast this spell, you may exile a creature card from your graveyard. Trample Plasma Incinerator - Whenever this creature attacks, if a card is exiled with it, it gets +X/+X until end of turn, where X is the power of the exiled card.