Rooftop Bypass

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."

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 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.

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

Enchantment creatures you control have menace.

Whenever one or more enchantment creatures you control deal combat damage to a player, exile a random creature card from that player's library. Create a token that's a copy of that card, except it's a 1/1 enchantment creature.

Menace, lifelink

Whenever a Knight you control deals combat damage to a player, put a +1/+1 counter on that creature and create a Blood token. (It's an artifact with ", , Discard a card, Sacrifice this token: Draw a card.")