Pernephyia, Goblin Hunter

Whenever Pernephyia, Goblin Hunter blocks or becomes blocked by a Goblin creature, it gains First Strike until end of turn.
Pernephyia has +1/+1 for each Goblin creature opponents control.
If an opponent has more than 5 Red creatures in their Graveyard, Pernephyia gains Deathtouch.