I believe all of these can be equally useful in the right deck - there are even options available outside of blue
TechnomancerTechnomancer brings back artifact creatures with a total mana value of up to six when it enters the battlefield this pairs very well with nCryptekCryptek and Resurrection OrbResurrection Orb which return a creature to the battlefield when it dies
Kenrith, the Returned King Kenrith, the Returned King is a nice mana sink that serves as a jack-of-all-trades for 5-color combo purposes
Knuckles the echidna punch | Knuckles pokemon, Knuckles the echidna workout, Omniverse Skip to content When autocomplete results are available use up and down arrows to review and enter to select
This one-mana artifact creature taxes opponents first non-creature spell each turn, creating card advantage while presenting a growing threat that scales throughout one of the best trading card games
But Post Malone was already a big part of the Magic community long before this