Creature — Treefolk Assassin 3/3, 4B (5)
Common
At the beginning of your upkeep, target creature other than Weed-Pruner Poplar gets -1/-1 until end of turn.
"When Byoog reached down to pull up a bit of root for the stew, he didn't expect the root to pull back."
—A tale of Auntie Wort
Illus. Jeff Miracola

4/1/2008: The ability is mandatory. If you're the only player who controls any other creatures, you must target one of your own creatures with the ability.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern