If the target creature is an illegal target as Floodpits Drowner's last ability tries to resolve, it won't resolve and none of its effects will happen
From MH3, there are 24 retro frame rares (28.4%), including fetch lands, 8 retro frame mythic rares (5.7%), 2 retro frame new-to-Modern rares (4.6%), and 1 mythic rare (1.1%)
We all know that double-strike can cause a ton of damage, and Combat Celebrant definitely brings the CC to your damage
Rendmaw is more interesting to me,both conceptually and from a gameplay POV
They can broker deals with the other players and then have a backdoor to finish them off
Honestly, the price between this and our #9 spot is pretty interchangeable, but the low end of the traditional foil version of the card knocked it down a bit