At the beginning of your upkeep, choose an opponent at random. Exile the top card of that player's library. Until end of turn, you may play that card and you may spend mana as though it were mana of any color to cast it. When you cast a spell this way, its owner loses life equal to its mana value.
Mana cost
2
B
R
Mana value
4
Printings
From
$1.55
EDHREC rank
#8036
Buy
Formats
Legacy
Legal
Vintage
Legal
Commander
Legal
Rulings
7 Oct 2022
Use the mana value of the spell as it exists on the stack (or last existed on the stack, if it's been removed) to determine how much life is lost. If there is an {X} in that spell's cost, include the value chosen for X to determine its mana value.
7 Oct 2022
You must follow all normal timing rules when casting a spell or playing a land using the permission granted by Ruinous Powers.