Save it for Rhystic Study or Isochron Scepter, something thats worth giving your opponent an extra mana so you dont need to deal with it
However, Braids's controller can benefit more from such an ability by constructing a deck to plan accordingly for this ability and always get the optimal value out of the effect, directly playing cards like the infamous Blightsteel Colossus and Eldrazi titans for free
Cards like the Pokeball are also staples of every deck, with no meta deck functioning without them
Illustrated by Franz Vohwinkel Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
If you aim to maximize Lurrus' potential as your companion, then prioritize one-drop and two-drop creatures, and keep an eye out for synergies between them
Play Other Cards for Free and Cost Reducers Two more related categories that are not included here are cards that play other cards for free, cheat things into play, and cost reducers, some of which can combine to make cards free, but that's not the focus here