Unsure of what to cost this.

That flavor text is so incredibly underwhelming

Could maybe be deliberate. Pair it up with some ridiculous overpowering art of some kind of ridiculous exploding volcano (fire raining down on the onlookers) on top of a display of animated jungle-fruits (attendees lying on the ground, poisoned), surrounded by ballerina tigers (threatening to eat the onlookers); with a tiny little school drinking-fountain in the middle.

As for cost... gaining one life a turn isn't really very expensive nowadays. Though historically it used to be all on its own! Braidwood Cup. Anyway; nowadays - Fountain of Renewal costs that part at 1 with cycle-from-play as an extra upside. Tapping down a creature is pretty good - but you're paying 3 to do it. Crown of Empires suggests that only costs with a seriously strong upside.
Buuut it's also almost the only non-creature artifact that I can find with "Tap target creature". The other one is Tyrant's Machine, which costs a bit more to activate.

So to do both - is very pushed, is still quite pushed.

@dude1818- Yeah, I never got the an evocative sentence for the flavor text.

@Vitenka- It untaps [a creature], not taps [them down]

Good point; similar cost-range and lack of options though. Jandor's Saddlebags is cast, to use; while Thousand-Year Elixir is ridiculous upside on cast, use.