Bigger on the Inside [Doctor Who] Equipment Vehicle A temporal conundrum

A temporal conundrum

you may add X mana of any one color

except it has vanishing 3 if that creature doesn't have vanishing

defending player loses 1 life

“In these halls there is no pass or fail

Bigger on the Inside [Doctor Who] Equipment Vehicle A temporal conundrumSet: Doctor Who Type: Enchantment Aura Rarity: Uncommon Cost: {3}{R}{G} Enchant artifact or land Enchanted permanent has "{T}: Target player adds two mana of any one color. The next spell they cast this turn has cascade." (When they cast their next spell, they exile cards from the top of their library until they exile a nonland card that costs less. They may cast it without paying its mana cost. They put the exiled cards on the bottom in a random