I think the strategy of the deck is solid and consistent, but it requires a bit more strategizing than play as many tokens as you can then cover them in +1/+1 counters. I wouldve expected this to work the other way, lore-wise
It's another non-in-universe take on an in-universe mechanic, considering its similarity to spree, the mechanic on cards like Three Steps AheadThree Steps Ahead from Outlaws of Thunder Junction
However, casting it early tends to result in many tokens, and casting it late tends to generate a lot of resources
However, once the turn ends and Invigorate wears off, if the creature's toughness is 0 or less, it would be put into a graveyard as a state-based action
This cards ability Oh, No You Dont
Oh, and its a blast to draft