Rush Recklessly [SRL-043] Rare Synchro/Pendulum/Effect Monster You can only use this

You can only use this effect of "Artifact Mjolnir" once per turn

Set: Structure Deck: Lair of Darkness Card type: Effect Monster Rarity: Common Attack: 1900 Defense: 0 If this card on the field is destroyed by card effect and sent to the GY: You can target 1 "Archfiend" monster in your GY

Immediately Special Summon any Monster Cards of Level 4 or lower among them on the field in face-up Attack Position or face-down Defense Position

This card's effect is not applied to the effect of "Dark Room of Nightmare"

Return 1 monster you control to its owner's hand

Rush Recklessly [SRL-043] Rare Synchro/Pendulum/Effect Monster You can only use thisSet: Spell Ruler Card type: Quick Play Spell Rarity: Rare Increase 1 face up monster's ATK by 700 points until the end of this turn.