This is a Samazar card released in Battle League!
Using two colorless energies, Giant Tree Cleave toss a coin twice and stuns the opponent's Pokémon immediately when both of them come up heads.
I thought it was just an entertainment card, but it seems like it will only be useful.
If you use the stadium 'Luminous Maze Forest', you can toss a coin again every turn.
If you increase the accuracy of the Giant Tree Slash through this, it seems like it would be a bit daunting...
I think it would be fun to make a deck with a gambling concept by collecting cards related to tossing different coins lol.