Guile
Creature — Elemental Incarnation
If a spell or ability you control would counter a spell, instead exile that spell and you may play that card without paying its mana cost.
When Guile is put into a graveyard from anywhere, shuffle it into its owner's library.
Legal in
Modern, Legacy, Vintage, Commander
Rulings (8)
The last ability triggers when the Incarnation is put into its owner's graveyard from any zone, not just from on the battlefield.
2007-10-01
If a spell or ability you control attempts to counter a spell that can't be countered, it doesn't. Since the spell wouldn't be countered, Guile's ability has no effect on it. The spell will continue to resolve normally.
2007-10-01
If the Incarnation is removed from the graveyard after the ability triggers but before it resolves, it will remain in its new zone when its owner shuffles their library. Similarly, if a replacement effect has the Incarnation move to a different zone instead of being put into the graveyard, the ability won't trigger at all.
2007-10-01
Exiling the spell is mandatory. Casting it is not.
2007-10-01