Skull Storm [Commander 2018] XY20 and not during the Damage

and not during the Damage Step

Set: Ignition Assault Card type: Link/Effect Monster Rarity: Rare Attack: 700 2 monsters with different names If a monster is Special Summoned to a zone this card points to: You can apply the following effects

whose DEF is higher than its ATK

Exile Relic of Progenitus: Exile all graveyards

if the equipped monster destroys an opponent's monster by battle: You can target 1 card your opponent controls

Skull Storm [Commander 2018] XY20 and not during the DamageSet: Commander 2018 Type: Sorcery Rarity: Rare Cost: {7}{B}{B} When you cast this spell, copy it for each time you've cast your commander from the command zone this game. Each opponent sacrifices a creature. Each opponent who can't loses half their life, rounded up. A rapid and catastrophic decline.