Play Root Fossil as if it were a Basic Pokémon. While in play, Root Fossil counts as a Colorless Pokémon (as well as a Trainer card). Root Fossil has no attacks of its own, can't retreat, and can't be affected by any Special Conditions. If Root Fossil is Knocked Out, it doesn't count as a Knocked Out Pokémon. (Discard it anyway.) At any time during your turn before your attack, you may discard Root Fossil from play.
Abilities
Spongy Stone
At any time between turns, remove 1 damage counter from Root Fossil.