The Resolute Heart ability acts as a cheat-death mechanic, allowing the zappy mouse to tank a One Hit Knock Out and set up for Topaz Bolt, its star move
Where red often pressures life totals directly and green can make attacks awkward through resting effects, blue tends to win by controlling tempo, bouncing characters, stacking the deck, drawing cards, and turning the opponents board into something they have to keep rebuilding
The caveat of all three types of energy needing to be different also makes it trickier to use, however, as some of the metagame's most powerful current combinations only utilise a couple of types, such as Duraludon VMAX decks that only use Dragon- and Steel-types Pokemon
The One Piece Card Game could have been a lazy re-implimentation of familiar Trading Card Game mechanics, but to its credit, it does bring some great new ideas to the table