While Ruby singers have remained a fringe strategy in competitive events, Powerline has appeared in Set Championships, and that drove a little extra demand for the Enchanted version of the movies most memorable song
5 mana to destroy a creature and get a treasure is probably a 2.5, and this has the major upside of spitting out more treasure and even transforming into a threat
Well, he actually gets several this set, but this one is a Floodborn Pluto that has Shift 5 and Bodyguard, as well as a self-healing ability
This can only be done once per game, and is usually helpful if you draw a hand without many inkwell icons (which are used to play cards and use abilities) or containing too many expensive cards for the start of the game
Use as much as you can to get as many cards out as possible as fast as you can
But most of the other color-fixing effects are actually ramp spells, which means they become too expensive to commit to in large numbers