Deoxys V itself is a great card that punishes your opponent for building up their energy its Psychic Edge attack (costing one Psychic Energy, one Colorless Energy) does 30 HP damage, plus an extra 30 for each energy card attached to their Active Pokemon
proxies legal to use
When converted to Blitzwing, Adaptive Assailant, you randomly choose either flying or indestructible and give it that ability until end of turn, then when Blitzwing, Adaptive Assailant connects with your opponent, you convert it back
It might not be the most invigorating experience, but going through and putting in the latest MTG Arena codes if you're a new player will help you feel a bit more established
Palace Jailer is an honorary member of this family because it technically does the job, but the creature remains exiled as long as youre the monarch, even if your Jailer is killed