Sigil of Aether (Rainbow Foil) [LGS366] (Promo) Rainbow Foil RC10 during this turn

during this turn

you can send 1 Reptile-type "Worm" monster from your Deck to the Graveyard

While an "Endymion" card(s) is on the field

Set: Sun & Moon: Hidden Fates Type: Colorless Rarity: Ultra Rare Retreat cost: Colorless

Sigil of Aether (Rainbow Foil) [LGS366] (Promo) Rainbow Foil RC10 during this turnSet: Promo Finish: Rainbow Foil Type: Instant Subtype: Aura Rarity: Promo Class: Wizard Cost: 0 At the beginning of your action phase, destroy this. When this leaves the arena, deal 1 arcane damage to any target. If damage is dealt this way, amp 1. (The next time you would deal arcane damage this turn, instead deal that much plus 1.)