RE: [ℒℯ] Nod'3 Card Trhead [sic] (why does trhead keep changing to thread?)
As NameBlank mentioned, from BW-on, cards stopped using their own name. Additionally, 'each' should be used instead of 'every,' and remember to always use numbers instead of spelling them out.
For the wording, I'd use something like "Flip a coin for each [G] Energy attached to this Pokémon. For each heads, heal 10 damage from this Pokémon. Put 1 damage counter on the Defending Pokémon for each tails."