Bitter Downfall is one of several "destroy target creature that was dealt damage" cards, and these cards are rarely good
Anyways cards like Twitch, Twiddle or Voltaic Key in combination with Strionic Resonator and any effect that puts more than 1 or 2 counters on something (OR RAMOS) just lets things go out of hand.Pretty nice deck you've got there!
Not only is this half the price of most other cards you use for exactly the same purpose but it is also on a point in the curve where it is hard to do progressive and useful things otherwise
Force of NO Looking for more counters
The tournament is played in Standard format , which includes cards from 2020s Sword & Shield set through 2022s Pokmon GO (essentially all cards with D and E regulation marks in the bottom left corner)
For two energy, Celebi can perform Powerful Bloom, dealing 50 damage per each head players flip the number of coins flipped depends on how many energy are attached to Celebi ex