Triskelion

Artifact Creature - Construct 1/1, 6 (6)
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.¹
A brainchild of Tawnos, the Triskelion later proved both versatile and useful.
Illus. Douglas Shuler

Crystal Keep Rulings Summaries

• Counters are removed one at a time, so as soon as you remove one that causes its toughness to drop to the amount of damage it has, it is destroyed. [D'Angelo 1996/11/08]
• Counters can be used on the turn it enters play because it does not require tapping. [bethmo 1994/06/01]
• Extended tournaments (see Rule 803) banned this card from 1999/10/01 until 2003/10/19.
• Note - This card had no creature type until Oracle 2007/10/01, when it became "Construct".

Format Legality	Legal in Vintage, Legacy, Extended Banned in Standard
Printings (3/19)	Mirrodin (Rare) Fourth Edition (Rare) Antiquities (Rare)