Creature — Beast 3/4, 4G (5)

Scragnoth can't be countered.
Protection from blue
It possesses no intelligence, only counter-intelligence.
Illus. Jeff Laubenstein

10/4/2004: Side-effects of spells that would counter this card will still happen, because they happen even if the spell they're trying to counter can't be countered.
10/4/2004: Spells can target Scragnoth and affect it while it is on the stack. Only effects that counter spells are ignored.
10/4/2004: Spells with a side effect that only happens if a spell is countered do not have their side effect happen when the countering fails.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern