There's enough incidental life gain and legendary creatures in the set for her to work reasonably well, but she's not going to be super powerful since life gain is more of a sub-theme than anything and her stats are bad
Illustrated by Simon Dominic Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Legal Modern Not Legal Brawl Legal Legacy Legal Comp
Sets such as Adventures in the Forgotten Realms, MTGs anticipated crossover with Dungeons & Dragons, are going to have a lot of extra added pressure on them given how strong Modern Horizons 2 is
You'll have to wait a turn to use its landfall ability, and it only makes colorless, but even with those brakes that's a strong ramper
Ability - Maximum Downer If all your Pokemon in play are Fusion Strike Pokemon, your opponent's Pokemon VMAX in play get -30HP
Oko's second ability overwrites all previous effects that set the creature's base power and toughness to specific values