Lich's Mastery [Dominaria Prerelease Promos] Arena League 1999 Must these roles be mutually

Must these roles be mutually exclusive

Whenever one or more Squirrels you control deal combat damage to a player

Set: International Collectors' Edition Type: Creature — Goblin Warrior Rarity: Uncommon Cost: {R} {R}: Goblin Balloon Brigade gains flying until end of turn

• Randomized date-stamped premium promo card

or you may cast a spell from your hand without paying its mana cost

Lich's Mastery [Dominaria Prerelease Promos] Arena League 1999 Must these roles be mutuallySet: Dominaria Prerelease Promos Type: Legendary Enchantment Rarity: Rare Cost: {3}{B}{B}{B} Hexproof You can't lose the game. Whenever you gain life, draw that many cards. Whenever you lose life, for each 1 life you lost, exile a permanent you control or a card from your hand or graveyard. When Lich's Mastery leaves the battlefield, you lose the game.