Rain of Filth
{B}
Instant
Oracle Text
Until end of turn, lands you control gain "Sacrifice this land: Add {B}."
Watch Out
Mana abilities don't use the stackRules Note
If this card's activated ability produces mana and doesn't target, it's a mana ability. Mana abilities resolve immediately without using the stack — opponents can't respond to them. However, abilities that target (even if they produce mana) aren't mana abilities.