Comet, Stellar Pup Streets of New Capenna Blitzwing gains that ability until

Blitzwing gains that ability until end of turn

{R}{R}{R}: Target creature gets +3/+0 until end of turn

It's also an Orc

This effect can't reduce the mana in that cost to less than one mana

Comet, Stellar Pup Streets of New Capenna Blitzwing gains that ability until0: Roll a six sided die. 1 or 2 [+2], then create two 1 1 green Squirrel creature tokens. They gain haste until end of turn. 3 [1], then return a card with mana value 2 or less from your graveyard to your hand. 4 or 5 Comet deals damage equal to the number of loyalty counters on him to a creature or player, then [2]. 6 [+1], and you may activate Comet's loyalty ability two more times this turn.