Rites Of Flourishing pairs well with other like Heartwood Storyteller where you benefit from their extra card casting capabilities
Land Color tag templates(None) Forest Basic Land - Forest Color tag templates(None) Haunted Mire ( : Add or .) This land enters tapped
The less human version is Tovolar, Midnight Scourge, whos a 4/4 with the same card draw ability, but this time around you can pay X, one red, and one green, to give a Wolf or Werewolf you control +x/+0 and trample until the end of the turn, which is a great way to finish someone off
This may seem like it's not that productive, as your opponent will often die to regular damage first, but a lot of what makes poison counters special in Phyrexia: All Will Be One is the Corrupted mechanic, which is an ability word that turns on when your opponent has three or more poison counters