2 "Krawler" monsters
If this face-up card is destroyed by battle, or leaves the field because of an opponent's card effect while its owner controls it: You can target 2 "Krawler" monsters with different names in your GY; Special Summon them in face-down Defense Position. Apply these effects based on the number of "Krawler" monsters you control.
2+: All monsters you control gain 300 ATK/DEF.
4+: Your opponent's cards and effects cannot be activated during the Battle Phase.
6+: Your monsters can attack directly.