The reason he is good is that he does a lot of work in the control match disrupting and posing as a threat while he is still a great tempo play against an aggressive player
Also, the fact that soulbond creatures can pair not just when they enter the battlefield but when other creatures enter (assuming they aren't paired) makes tracking them tricky
For example, a sorcery spell that says "Target creature you control deals damage equal to its power to any target" wouldn't cause Bloodfeather Phoenix's ability to trigger even if an opponent or battle was dealt damage, as it's the creature dealing the damage, not the spell
It's also a quirky card that we hope Eternal players can have fun exploring
Additionally, non-foil versions of the Secret Lair x Marvel's Deadpool drop will be available at participating Wade's 'Pool Network (WPN) game stores at a later date
when Banding itself is already a mechanic that's not the most popular or useful