Use the mana value of the sacrificed creature as it last existed on the battlefield to determine how many cards to exile.
2024-04-12 • wotc
If the sacrificed creature had {X} in its mana cost, X is 0 for the purpose of determining its mana value.
2024-04-12 • wotc
You pay all costs and follow all normal timing rules for cards played from exile with Rakdos's triggered ability. For example, if the exiled card is a land card, you may play it only during your main phase while the stack is empty.
2024-04-12 • wotc