Once during your turn (before your attack), you may reveal the top card of your deck. If that card is a basic Energy card, attach it to 1 of your Pokémon. If not, put the card back on top of your deck. This power can't be used if Tyranitar is affected by a Special Condition.
You may discard an Energy card attached to Tyranitar. If you do, this attack does 50 damage plus 20 more damage.