The conditions are that you need a chunky creature and that youre hitting a smaller one, but thats not hard for Gruul particularly with so many cheap and pivotal creatures being deployed to curve out
In duels, I would call the Rain of Daggers better because it's a Plague Wind for three fewer mana, and that's good
Either way, I hope you enjoyed this romp down memory lane, even if some of this was actually new to you
In metagames rife with Reliquary Towers and full grips, this is going to be obscenely good (because it'll be like a 30/30, and it will tutor for that Strip Mine, Dust Bowl, and/or Wasteland to destroy the Towers)
Add in the straight-forward 1,200 gems in rewards
I tossed in all Cantrip Walls that arrived and drew in my colors like Wall of Omens or the above one