You can't sacrifice the creatures you gained control of with Call for Aid this turn for any reason
I'm certainly not here to analyze the Pauper metagame and comment on what should be banned/unbanned, I'll leave that to Alex Ullman and others
The first will force the targeted foe to draw three and discard three at random (good for discard punishing decks like Megrim), sacrifices a non-token artifact (not a Treasure, Clue, Blood, or Food), and the Balor shoots them for the damage to the cards in their hand (nice)
Although never released outside Japan, the game actually has a sequel titled Pokmon Card GB2: Here Comes Team GR
Against the wrong deck, this can make it significantly less useful, however, thankfully in Commander, there are multiple opponents
Your party consists of the default selection: Fighter, White Mage, Black Mage, Thief