Rhygar the Dragon Trigger

+2: Rhygar the Dragon Trigger deals 3 damage to any target. Then, if a Hypersonic Dragon is on the battlefield, repeat this process one time.
-4: Create a token creature named Hypersonic Dragon that is a copy of the card of the same name and put it onto the battlefield.
-X: Rhygar the Dragon Triggers deals X damage to any target. Then, if a Hypersonic Dragon is on the battlefield, repeat this process one time.