Varka, Mana Leech

Changeling (This card is every creature type)

Whenever an instant or sorcery enters your graveyard from anywhere other than your hand, Varka, Mana Leech deals
1 damage to target creature, planeswalker, or battle.

{t}: Exile an instant or sorcery card from your graveyard.

During your turn, you may cast spells exiled with Varka.
If you do, pay life equal to its mana value.