Decks with draw effects like this often struggle with stabilizing the board before an opposing deck manages to kill them, so it's nice to see Mending shore up this weakness slightly
There will often be times when you have Massacre Girl, Known Killer and Sheoldred, the Apocalypse in your hand on turn 4 and youd rather cast this
For example, the siege subtype lets you basically assign it to an opponent to protect, then everyone else can attack it and it transforms into the backside when it's defeated
However, I'll keep it updated as new cards come out, so keep your eye out
Target opponent may choose one of the cards you exiled with Dubious Challenge and put it onto the battlefield under their control
With legendary team-ups to take on the invaders, Planeswalkers faced with their Phyrexianized friends-turned-foes, and the future of the Multiverse forever changed, March of the Machine is the action-packed one last stand against Phyrexia