Players often see the shapeshifter played in the Modern format, along with some Commander as well
You might be able to get somewhere by simply playing them and powering them up with Energy cards, but you shouldn't rely on that alone
While there is a five color elementals deck that I would love to plot out one day, the ability to get a healthy use out of Brighthearth Banneret, Flamekin Harbinger, and Titania, Protector of Argoth all in one deck is rather exciting
Legendary Creature Human Assassin3/2 Partner with Evie Frye (When this creature enters, target player may put Evie into their hand from their library, then shuffle.) Whenever one or more Assassins you control deal combat damage to a player, exile up to one target Assassin card or card with freerunning from your graveyard
A Prowling Serpopard can't be countered, makes it so other creatures can't be counted, and is a 4/3 for 1GG