
Trap Card
Solemn Warning is a Platinum Rare Trap Card card from Yu-Gi-Oh! (Noble Knights of the Round Table Box Set, NKRT). Current market price: $0.32.
When a monster(s) would be Summoned, OR when a Spell/Trap Card, or monster effect, is activated that includes an effect that Special Summons a monster(s): Pay 2000 LP; negate the Summon or activation, and if you do, destroy it.