"Meklord Emperor" monsters you control cannot be targeted by the effects of Synchro Monsters. When this card on the field is destroyed and sent to the Graveyard: You can add 1 "Meklord Emperor" monster from your Deck to your hand.
The problem with this card is that it's dead vs everything else. It can also easily be popped or hit by Cosmic and then you lose the protection. Meklords will probably be focused on the smaller guys and depend on Primo's level up rewards. I'm hoping for 2-3 Mekktimed Blast and the newer Wisel around Lv 35, but it wouldn't surprise me if it's just the parts of Wisel. Also depends on Primo skills .