The Voyage action card conveniently allows you to move two characters to the same location for free
Number 144 Language English Legal Formats Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pioneer, Timeless, Vintage Not Legal Formats Alchemy, Pauper, Standard Rulings (4/29/2022) Evolving Door's ability instructs you to count the number of colors, but it doesn't track what those colors were
Pay seven life, draw seven cards and lifelink makes that exchange sustainable the moment it connects
Emet-Selch's last ability checks your graveyard at the moment it would trigger to see if you have fourteen or more cards in your graveyard
It gives you a bit of a safety net against attacks if people want to draw their cards, but that's not enough of a gameplan on its own, so Doctor #2 really needs help from its companion to justify a spot in the command zone