Arctic Cheetah-Prime

Whenever you cast an instant or sorcery spell, if
you cast that spell from your hand, put a +1/+1 counter on Arctic Cheetah-Prime.
Remove 5 +1/+1 counters from
Arctic Cheetah-Prime: Instant or sorcery spells
in your graveyard gain Flashback {1} until the
end of turn.