Try using them and your other "levelers" with Time of Heroes, an enchantment that gives each creature you control with a level counter on it +2/+2
That's amazing value for just one mana
Plus, the spell cant be countered as a good side effect
The artwork is charming enough, being red-skinned humanoids in hilarious sleeping outfits, but here's the problem: Look at Crimson Kobolds and Crookshank Kobolds

Jeskai Superfriends, Weekly Championship 1 Satoshi Nakayama 2 Karn, the Great Creator 2 Narset of the Ancient Way 3 Narset, Parter of Veils 1 Sarkhan the Masterless 4 Teferi, Time Raveler 3 Deafening Clarion 2 Essence Scatter 1 Inspired Ultimatum 2 Mystical Dispute 2 Neutralize 4 Omen of the Sea 4 Shark Typhoon 2 Shatter the Sky 2 Whirlwind Denial 2 Fabled Passage 4 Hallowed Fountain 3 Island 1 Mountain 2 Plains 4 Raugrin Triome 4 Sacred Foundry 4 Steam Vents 2 Temple of Enlightenment Sideboard 2 Aether Gust 1 Bag of Holding 1 Deafening Clarion 3 Dovins Veto 1 Grafdiggers Cage 1 Mystical Dispute 3 Scorching Dragonfire 1 Shadowspear 1 Sorcerous Spyglass 1 Zirda, the Dawnwaker Jegantha, the Wellspring The WUBRG-focused companion doesnt quite have the same popularity as some of the other companions on this list, but some players have found success using Jegantha to revive Izzet Phoenix strategies