Creature — Sliver 2/2, RG (2)
Uncommon
Whenever a Sliver becomes blocked, that Sliver gets +1/+1 until end of turn for each creature blocking it.
"Slivers are evil and slivers are sly;
And if you get eaten, then no one will cry."
—Mogg children's rhyme
Illus. Ron Spencer

10/4/2004: If two Spined Slivers are on the battlefield then each blocked sliver gets +2/+2 for each creature blocking it.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern