Snowfield Sinkhole
Snow Land — Plains Swamp
Oracle Text
({T}: Add {W} or {B}.)
This land enters tapped.
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.