[Mewni]

12 Momentum for the Buff alone, 3 momentum for HSDW, 3 for chanting, 3 for blinking since no fool would stay close, 3 to recast it

So it's 24 Momentum for one instance of unresistible damage, chances are if someone is equiping themselves to counter you, they have a way to stop you from even doing a normal CM cast. Be it dispells, silence, or even having something that would ignore your instance of damage. Can't do true damage if you can't hit them (Body of Memesep, Cobra...)

Outside of PVE its pretty meh and extremelly hard to pull off, for 24 momentum to do true damage, just using all that momentum to cast normally on the enemy would surpass the numbers you'll do on them, unless again, they are monogearing to counter only you, and if they are doing that they have stuff on their build kit that would make sure you don't do a normal CM anyway.