Teferi's Protection (1691) [Secret Lair: Sheldon's Spellbook] Rhino Druid you may pay 0 rather

you may pay 0 rather than pay the mana cost for a colorless spell you cast from your hand

Set: Kaladesh Inventions Type: Artifact Creature — Angel Rarity: Mythic Cost: {7} Flying

An opponent separates those cards into two piles

though such a network tends to pull power from nearby devices

Teferi's Protection (1691) [Secret Lair: Sheldon's Spellbook] Rhino Druid you may pay 0 ratherSet: Secret Lair: Sheldon's Spellbook Type: Instant Rarity: Rare Cost: {2}{W} Until your next turn, your life total can't change and you gain protection from everything. All permanents you control phase out. (While they're phased out, they're treated as though they don't exist. They phase in before you untap during your untap step.) Exile Teferi's Protection. "If you're doing it alone, you're doing it wrong." Sheldon Menery