Ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)

Whenever this creature deals combat damage to a player, you may put an artifact card with mana value less than or equal to that damage from your hand onto the battlefield.

Whenever one or more artifact creatures you control deal combat damage to a player, you get (an energy counter).

Pay : Create a tapped 3/3 colorless Robot artifact creature token.

Whenever you seek one or more cards, create a 3/3 colorless Phyrexian Golem artifact creature token.

Golems you control have vigilance.

Ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)

Whenever one or more Ninja or Rogue creatures you control deal combat damage to a player, create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")

Whenever a creature you control becomes blocked, you may return it to its owner's hand.

Whenever one or more creatures you control deal combat damage to a player, draw a card.

Flying

Metalcraft — Whenever this creature deals combat damage to a player, if you control three or more artifacts, that player mills four cards.

Whenever one or more nontoken creatures you control deal combat damage to a player, create a 1/1 black Assassin creature token with menace. (It can't be blocked except by two or more creatures.)

Whenever this creature deals combat damage to a player, if you control a blue or red permanent, you may discard a card. If you do, draw a card.

Whenever one or more other nontoken creatures you control deal combat damage to a player, choose one of those creatures. Conjure a duplicate of the chosen creature into your hand.

Flying

Whenever Yotian Courier attacks, choose one that wasn't chosen during your last combat —

• Create a tapped Powerstone token.

• Seek a nonland card with mana value equal to the number of Powerstones you control.

Whenever one or more artifact creatures you control deal combat damage to a player, you get (two energy counters).

At the beginning of your end step, you may pay one or more . If you do, create an X/X colorless Vehicle artifact token named Nalaar Aetherjet with flying and crew 2, where X is the amount of paid this way.

Whenever a creature you control with a +1/+1 counter on it deals combat damage to a player, you may draw a card.

Commander creatures you own have "Whenever one or more nontoken creatures you control deal combat damage to a player, you create a 1/1 blue Faerie Dragon creature token with flying."

When this creature enters, if you control no face-down permanents, return this creature to its owner's hand and manifest dread.

Whenever one or more colorless creatures you control deal combat damage to a player, draw a card.

Whenever this creature deals combat damage to a player, reveal the top card of your library and put that card into your hand. You gain life equal to its mana value.

Whenever you cast your second spell each turn, create a 1/1 colorless Drone artifact creature token with flying and "This token can block only creatures with flying."

Prevent all combat damage that would be dealt to attacking artifact creatures you control.

Whenever one or more artifact creatures you control enter, draw a card. This ability triggers only once each turn.

Flying

Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

Whenever a creature you control with a counter on it deals combat damage to a player, draw a card.