Krawler Soma - POTE-EN029 Common Unlimited

You can target 1 face-up monster you control; Special Summon this card from your hand, and if you do, change that monster to face-down Defense Position, also it cannot change its battle position for the rest of this turn. During your Main Phase: You can reduce this card's Level by 2 or 4, and if you do, Special Summon "Krawler" monsters with different names from your hand, Deck, and/or GY whose total Levels equal the amount reduced, in face-up or face-down Defense Position. You can only use each effect of "Krawler Soma" once per turn.