Your search for "Barrel Dragon STP2-EN003" revealed the following:
Barrel Dragon - STP2-EN003 - Ultra Rare from Speed Duel Tournament Pack 2, available at 401 Games Canada. Rarity: Ultra Rare Card Text:Once per turn: You can target 1 monster your opponent controls; toss a coin 3 times and destroy...
Barrel Dragon - DT02-EN005 - Duel Terminal Super Parallel Rare from Duel Terminal 2, available at 401 Games Canada. Rarity: Duel Terminal Super Parallel Rare Card Text:Toss a coin 3 times. If 2 out of 3 results are Heads, destroy...