You can make a "Counter-Squirrel" aggro-control deck, a tempo-based deck with cards like Aether Burst and Temporal Spring, or a threshold deck with cards like Merfolk Looter, Mental Note, and Careful Study
Charizard Classic Game CLC 003/034 PSA 10
Retrieved August 24, 2021
Battles entering the battlefield trigger All Will Be One much like a planeswalker would
Oko comes down on turn three (often sooner, since green is the color of mana ramp), and if you don't have some way to dish out 6 damage right away, there's not much you can do to catch up
Appearing as Stellar Tera Pokmon ex, Espeon and Umbreon sparkle brightly with attacks that disrupt your opponents strategy