Your search for "Pyroclasm - 2003 Peer Kroger (8ED)" revealed the following:
Pyroclasm (WC03) (Peer Kröger) (Sideboard) from World Championship Decks 2003, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: John Avon Card Text:Pyroclasm deals 2 damage to each creature.Not a Tournament Legal card.”SB” indicates this is a sideboard card....