Momentum

Whenever an opponent casts a creature spell, this enchantment deals 1 damage to that player.

Flying When this creature dies, you gain control of all enchantments. (You don't get to move Auras.)

This creature can't be blocked as long as defending player controls an enchantment.

As long as this artifact is untapped, each player chooses artifact, creature, or land during their untap step. That player can untap only permanents of the chosen type this step.

Enchant creature At the beginning of your upkeep, you may put an infection counter on this Aura. At the beginning of the upkeep of enchanted creature's controller, this Aura deals X damage to that player, where X is the number of infection counters on this Aura.

Flying 2, Sacrifice this creature: Draw a card.

Reveal any number of green cards in your hand. Target creature gets +X/+X until end of turn, where X is the number of cards revealed this way.

Flying