Second, the player who goes first may not play a Supporter until their next turn
This card would be beneficial in a tribal-themed deck that focuses on casting multiple creature spells of different types, as it allows you to diversify your creature types and potentially trigger various tribal synergies
As a doctors companion, it also pairs well with legendary doctor creatures for flavorful Commander builds
Ill likely be reserving a few cards to go with those commanders
Call of the Ring + Ripples of Undeath Call of the Ring and Ripples of Undeath don't let you pay life en masse for a combo turn, but they're excellent to consistently trigger payoffs like Font of Agonies and Betor, Ancestor's Voice
Theres also the issue that most set mechanics are implemented with some kind of setup/payoff dynamic, where your best outcomes revolve around mini-combos of specific cards