While nothing to sneeze at and having only the one hoop to jump will make this card pretty good, I do wish it had done one more thing
Yeah, best not to think too much about it
I would imaging that Containment Priest will be the most expensive card from the set, and fall somewhere in the $12 to $14 range a year from now
Snapcaster Mage Snapcaster Mage went from the best blue creature ever and a blue staple across multiple formats to a barely playable card
Kosei, Penitent Warlord Kosei, Penitent Warlord can be an excellent Voltron commander, doing everything you want in this scenario
If you are worried about your life total and want to play discard anyway (for example against Sancifier en -Vec in Burn), you can play 1-2 copies of Inquisition of Kozilek instead