u/RustedFriend

Just want to check this interaction works the way I think it should. So if I have [[Omnath, Locus of Mana]] as my commander and he's storing 24 mana, then cast [[Momentous Fall]] targeting omnath. I would draw 21 cards and gain 21 life. Send Omnath back to the command zone, and then I still have the 20 mana floating till end of phase. So I can just resummon him immediately and have 15 mana still that wont empty when my main phase ends.

I guess mostly I just wanted to make sure there isn't some weird interaction that I'm unaware of that makes all the mana dump as soon as omnath leaves the battlefield.