Hidden Ancients
Mana cost
Mana value2TypeEnchantment
Color identity
Green
RarityUncommon
SetUrza's Saga (USG)
ArtistDaren Bader
Price€0.30 · $0.26
Hidden Ancients 

Enchantment
When an opponent casts an enchantment spell, if this permanent is an enchantment, it becomes a 5/5 Treefolk creature.
The only alert the invaders had was the rustling of leaves on a day without wind.
Legality
CommanderLegalStandardNot legalPioneerNot legalModernNot legalLegacyLegalVintageLegalPauperNot legalBrawlNot legalOathbreakerLegalHistoricNot legalTimelessNot legalPenny DreadfulNot legal
Rulings
2008-08-01
A noncreature permanent that turns into a creature can attack, and its abilities can be activated, only if its controller has continuously controlled that permanent since the beginning of their most recent turn. It doesn't matter how long the permanent has been a creature.
2004-10-04
When it turns into a creature, it is no longer an enchantment.
2004-10-04
It changes into a creature even if the spell is countered.