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Artifact creatures you control have "{T}: Add {C}. Spend this mana only to cast an artifact spell or activate an ability of an artifact source."
Trample
Landfall — Whenever a land you control enters, put two +1/+1 counters on target creature you control.
Whenever U.S.S. Reliant enters or deals combat damage to a player, return target creature card with mana value 4 or less from your graveyard to the battlefield with a finality...
Artifact creatures you control have "Whenever this creature deals combat damage to a player, you may pay {1}. If you do, create a 1/1 colorless Borg artifact creature token."
Escalate—Tap an untapped creature you control. (Pay this cost for each mode chosen beyond the first.) Choose one or more — • Destroy target creature with power 4 or greater....