Varetor, Dragon Trainer

Flying
Whenever this card attacks, you may pay 1 life then create a 0/3 Red Dragon Egg creature token with "Whenever this creature is targeted by an effect you may pay {1} and counter it, also put a Hatch counter on this card. If this card has 4 hatch counters on it, sacrifice it and then you may summon a dragon from your hand or graveyard without paying its mana cost."
{1}{r}: Target creature you control gets +1/+1 and Haste until end of turn.