Sarkhan, Fireblood [Core Set 2019 Prerelease Promos] Phyrexian Demon and that player can't activate

and that player can't activate abilities that aren't mana abilities

Deep within the Cabal's vault

you may return that card to the battlefield under your control

Set: Fifth Edition Type: Enchantment Rarity: Rare Cost: {B}{B}{B} Skip your draw step

/ And screams of horror rend th' affrighted skies

Sarkhan, Fireblood [Core Set 2019 Prerelease Promos] Phyrexian Demon and that player can't activateSet: Core Set 2019 Prerelease Promos Type: Legendary Planeswalker Sarkhan Rarity: Mythic Cost: {1}{R}{R} +1: You may discard a card. If you do, draw a card. +1: Add two mana in any combination of colors. Spend this mana only to cast Dragon spells. 7: Create four 5 5 red Dragon creature tokens with flying.