Fiery Temper

Choose one:
•Destroy target artefact or enchantment.
•Deal 3 damage to target creature or planeswalker.
•As Fiery Temper resolves it becomes an enchantment with 3 temper counters on it.
At the beginning of your upkeep remove a temper counter from Fiery Temper, then if there are no more temper counters on it, deal 5 damage to each creature, planeswalker and player. Exile Fiery Temper.