Nonartifact spells you cast have improvise. (Your artifacts can help cast those spells. Each artifact you tap after you're done activating mana abilities pays for .)
This spell costs less to cast, where X is the total power of creatures you control.Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
Sacrifice Loyal Retainers: Return target legendary creature card from your graveyard to the battlefield. Activate only during your turn, before attackers are declared.
If a creature dying causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.Creature tokens you control have vigilance and lifelink.
Counter target spell or ability that targets a permanent you control.This spell costs less to cast if it targets a spell or ability that targets a creature you control with power 7 or greater.
Whenever Lorthos, the Tidemaker attacks, you may pay . If you do, tap up to eight target permanents. Those permanents don't untap during their controllers' next untap steps.
Commander ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand or the command zone tapped and attacking.)Whenever a Ninja you control deals combat damage to a player, reveal the top card of your library and put that card into your hand. Each opponent loses life equal to that card's mana value.
FlyingAs Sower of Discord enters, choose two players.Whenever damage is dealt to one of the chosen players, the other chosen player also loses that much life.