! - Please rework minion offering skills

I have several cases where I spend life and mana to pain offering only to see it not activated on any of my minions.

At least make the cost to life, mana and cooldown happen only after it is activated not when I press the button in my controller but the system likely did not find a minion.

On regular mapping, it is bearable.

But on pinnacle encounters like Simulacrum where one mistake is crucial. It is game-ending. I lost life and mana, the skill on cooldown but no DPS BOOST!