At the beginning of your upkeep, sacrifice Drought unless you pay .
Spells cost an additional “Sacrifice a Swamp” to cast for each black mana symbol in their mana costs.
Activated abilities cost an additional “Sacrifice a Swamp” to activate for each black mana symbol in their activation costs.
Activated abilities contain a colon. They’re generally written “[Cost]: [Effect].” Some keywords are activated abilities and will have colons in their reminder text.
01-08-2008
wotc
A hybrid symbol that is both black and another type is a black mana symbol, regardless of what cost is paid for it.
04-10-2004
wotc
You have to sacrifice a Swamp for each black mana in the activation cost. If you use Pestilence with {B}{B}{B}{B}, that’s 4 activations with {B} each so you sacrifice 4 Swamps.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.
