Sacrifice bug?

[ganjatron]

JGary321, thank you very much sir. You have figured out my problem. It plainly states in the description of Lvl1 Sacrifice that it does 425 damage and restores 50% of that to your target unit. If I did the simple math, I would have realized that 425/2 = 213. So, if your unit has more than 213 health, you need to upgrade the spell.

Thanks, now I understand better the way this works, for example, why I can create 4 Inquisitors but only 1 Knight and 0 Royal Thorns with the level 1 sacrifice.