All Energy cards that provide only [C] Energy attached to your [G] Pokémon provide [G] Energy instead.
[C][C] Green Blast: 20+
Does 20 damage plus 10 more damage for each [G] Energy attached to all of your Pokémon.
[G][G][C] Toxic Sleep
The Defending Pokémon is now Asleep and Poisoned. Put 2 damage counters instead of 1 on the Defending Pokémon between turns.