Its graveyard hate, a Disenchant, or a lifegain trigger, or all three if you have the mana to spare
According to the sets official release notes from Wizards of the Coast, the battles serve as a thematic tie-in to the overarching story behind March of the Machine, where the cultist army of Phyrexians have launched their invasion of the entire multiverse
Loot, Exuberant Explorer, Bloodbraid Challenger, Ilharg, the Raze-Boar, and Emergent Woodwurm are all great at sneaking creatures into play without even paying for them
The Bodyguard keyword gives it more value as a defender, and the 'Stay Alert!' ability gives all your Musketeers Evasive during your turn
OP-06 introduced three major archetypes: Thriller Bark (led by Gecko Moria and Perona), Germa 66 (led by Vinsmoke Reiju), and Fishman Island (led by Hody Jones)