Joltdreigon, Lightning Hydra

Flying, Menace
Electric Discharge: Whenever Joltdreigon attacks, you may pay {1}{u}. If you do, Joltdreigon deals 2 damage to any target and taps that target. If the target is already tapped, it doesn't untap during its controller's next untap step.
Swarming Surge: Whenever a creature an opponent controls dies, create a 1/1 Blue and Black Insect Pokémon creature token with “This creature has deathtouch as long as you control a Dragon.”