Solemn Warning [SDSE-EN039] Common Union/Effect Monster You can only use this

You can only use this effect of "Sniffer Dragon" once per turn

You can only use this effect of "Shiranui Spectralsword Shade" once per turn

if it attacks a Defense Position monster

Set: Duelist Saga Card type: Effect Monster Rarity: Ultra Rare Attack: 300 Defense: 100 You can send this card to the Graveyard

Set: High-Speed Riders Card type: Synchro/Effect Monster Rarity: Super Rare Attack: 2400 Defense: 1800 1 Tuner + 1 or more non-Tuner monsters If this card is Special Summoned

Solemn Warning [SDSE-EN039] Common Union/Effect Monster You can only use thisSet: Structure Deck: Synchron Extreme Card type: Counter Trap Rarity: Common When a monster(s) would be Summoned, OR when a Spell Card, 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 that card.