Undergrowth
Mana cost
Mana value1TypeInstant
Color identity
Gruul
RarityCommon
SetAlliances (ALL)
ArtistPat Lewis
Price€0.13 · $0.24
Undergrowth 
Instant
As an additional cost to cast this spell, you may pay 
.
Prevent all combat damage that would be dealt this turn. If this spell's additional cost was paid, this effect doesn't affect combat damage that would be dealt by red creatures.
Prevent all combat damage that would be dealt this turn. If this spell's additional cost was paid, this effect doesn't affect combat damage that would be dealt by red creatures.
"It is the work of sorcery. Burn it!" —Taaveti of Kelsinko, Elvish Hunter
Legality
CommanderLegalStandardNot legalPioneerNot legalModernNot legalLegacyLegalVintageLegalPauperLegalBrawlNot legalOathbreakerLegalHistoricNot legalTimelessNot legalPenny DreadfulNot legal
Rulings
2004-10-04
It means that red creatures still deal damage if you pay the additional cost.

