Phyrexian Tower
Legendary Land
Oracle Text
{T}: Add {C}.
{T}, Sacrifice a creature: Add {B}{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.