Putrid Leech is a dullard of a card, it does nothing other than be very fat for very little mana
Now the game is yours
In other words, Worldfire isn't as good as it used to be
Getting to dig for more permanents when it dies or getting to buff the team is an excellent tradeoff for losing a 5/4 with flying and vigilance
Comes Out -1 Cut Down -1 Abrade -1 Go for the Throat (two if they have Ao, the Dawn Sky) -1 Brotherhoods End (Play) -1 Make Disappear (Draw) Comes In +2 Negate +1 Obliterating Bolt (if they have Ao, the Dawn Sky) I initially struggled in this matchup, as I felt like the games kept going long, and Id eventually get grinded out by their Serra Parragon and/or Roadside Reliquary
Despite this, when I play with the Wheel, for whatever reason, I fairly frequently find myself casting it simply because of what I know or think it will get out of my opponents hand