Savage Ventmaw can replace Demanding Dragon, since the Demanding Dragon only targets a single opponent and sacrificing just one creature likely wont make that big of a difference to the match
2023-10-13 The Ninth Doctor's ability triggers during the untap step and goes onto the stack at the beginning of the next step (usually the upkeep)
(Each in the mana costs of permanents you control counts toward your devotion to blue.) P/T Number 73 Language English Legal Formats Brawl, Commander, Competitive Brawl, Legacy, Modern, Pioneer, Timeless, Vintage Not Legal Formats Alchemy, Pauper, Standard Rulings (1/24/2020) If your devotion to blue is zero at the time the triggered ability of Thassa's Oracle resolves, you don't look at or move any cards in your library
As long we all continue to benefit like that, I'll continue to post job openings
Encourage the action with a little group hug card draw and you'll come out way ahead
it even works in go-wide decks, though I prefer playing it in decks that care about it being an aura