It's also great with one key thing too like your Commander
Reward: Pack Hourglasses x12, Wonder Hourglasses x36, Shop Tickets x10 Paradox Drive Museum 2 How to beat: Collect the Two-Star variants of the following cards from the Paradox Drive expansion: Iron Bundle ex, Miraidon ex, Flutter Mane ex and Koraidon ex
If another effect (or effects) modifies how much damage a source you control of the chosen type would deal (for example, by preventing some of that damage), the player being dealt damage or the controller of the permanent being dealt damage chooses the order in which any such effects, including the effect of Collective Inferno's last ability, apply
1 Path to Exile
However, it seems that the depth of the rarity helps overcome the lack of one super-expensive card
Then, once you've decided to gain enough life in a turn, he flips into his Planeswalker side and turns all that incidental life game into a potential one-turn kill