Ashnod's Altar [Antiquities] Super Rare Does 90 damage minus 10

Does 90 damage minus 10 damage for each card in your hand

and a checklist

Number: LVAL-EN057 Rarity: Secret Rare Attribute Monster Type/Card Type: DARK Spellcaster/Xyz/Effect Monster Level: 4 A / D: 2100 / 200 Description: 2 Level 4 Spellcaster-Type monsters // During your Main Phase 2

Attack 1: [2] Ram (30) Attack 2: [2L] Shock Bolt (70)

Ashnod's Altar [Antiquities] Super Rare Does 90 damage minus 10Rarity: U Card Type: Poly Artifact Description: 0: Sacrifice one of your creatures to add 2 colorless mana to your mana pool. This effect is played as an interrupt. You may not sacrifice a creature that is already on its way to the graveyard.