I had similar mana and attacker hopes with Servant of the Conduit, but that failed because 2/2 just isnt enough, where Channeler Initiate becoming a 2/3 or 3/4 really changes the math
Card List: Assassin's trophy Azorius Signet Baleful Strix Boros Signet Damn Despark Dimir Signet Dovin's Veto Growth Spiral Ignoble Hierarch Izzet Signet Noble Hierarch Orzhov Signet Putrefy Rakdos Charm Rakdos Signet Rhythm of the Wild Supreme Verdict Talisman of Conviction Talisman of Curiosity Talisman of Dominance Talisman of Hierarchy Talisman of Indulgence Talisman of Progress Terminate Sets and printings may vary across products
And that only gets worse if you are actually playing it and needs to read its text clearly
While the green one is far and away the most versatile and easy to find a use for, none of them are unplayable, and all can slot into your mana bases without much trouble, especially given they enter untapped
Vanquisher's Banner is both an anthem and a potential source of card draw
It could be simple, or it could be more elaborate