"Why do bad things always come in threes?"
—Gisulf, expedition survivor

March of the Machine Commander

Triskelion

Triskelion enters the battlefield with three +1/+1 counters on it.
Remove a +1/+1 counter from Triskelion: It deals 1 damage to any target.

This creature enters with three +1/+1 counters on it.
Remove a +1/+1 counter from this creature: It deals 1 damage to any target.

"What's got three legs and three heads and wants to kill us? That's not a riddle!"
—Jayeen, Fallaji scout

Dominaria Remastered

Optimally designed for agility, mobility, and lethality.

The List

Duel Decks: Elspeth vs. Tezzeret

Triskelion enters the battlefield with three +1/+1 counters on it.
Remove a +1/+1 counter from Triskelion: Triskelion deals 1 damage to target creature or player.

Magic 2011

Mirrodin

Triskelion comes into play with three +1/+1 counters on it.
Remove a +1/+1 counter from Triskelion: Triskelion deals 1 damage to target creature or player.

Renaissance

Rinascimento

Fourth Edition Foreign Black Border

A brainchild of Tawnos, the Triskelion later proved both versatile and useful.

Fourth Edition

When Triskelion comes into play, put three +1/+1 counters on it.
o0: Remove one of these counters from Triskelion to have Triskelion deal 1 damage to target creature or player.

A brainchild of Tawnos, the Triskelion proved its versatility and usefulness in many of the later battles between the brothers.

Antiquities

Triskelion gets three +1/+1 counters when cast. Controller may discard a +1/+1 counter at any time to do 1 damage to any target.