You can pay 1000 LP, then target 1 face-up Spell/Trap Card on the field; destroy it. You can only activate this effect of "Unending Nightmare" once per Chain.
Near Mint Unlimited - $1.40
Near Mint 1st Edition - $2.30
Lightly Played Unlimited - $1.30
Lightly Played 1st Edition - $2.20
Moderately Played Unlimited - $1.20
Moderately Played 1st Edition - $1.90
Played Unlimited - $0.90
Played 1st Edition - $1.50