The gameplan is simple: play double creature effects, play non-creature spells, storm off, go infinite, destroy your opponents
Adeline, Resplendent Cathar White has a long history of being the power and toughness equal to the number of creatures you control front-runner, and Adeline, Resplendent Cathar is one of the best creatures weve seen with that text
Izzet Spellementals (10.5% of the Winner's Metagame) 6 Island 4 Riverpyre Verge 4 Spirebluff Canal 4 Steam Vents 4 Eddymurk Crab 4 Hearth Elemental 4 Sunderflock 4 Opt 4 Prismari Charm 4 Sleight of Hand 3 Burst Lightning 2 Get Out 2 Traumatic Critique 2 Spell Snare 2 Impractical Joke 2 Stormcarved Coast 2 Flow State 2 Winternight Stories 1 Spell Pierce 3 Colorstorm Stallion 2 Annul 2 Ghost Vacuum 2 Slagstorm 2 Ral, Crackling Wit 1 Disdainful Stroke 1 Flashfreeze 1 Octopus Form 1 Spell Pierce Izzet Spellementals is built around a high density of cheap instants and sorceries that draw cards, interact early in the game, and stock the graveyard for Eddymurk Crab and Hearth Elemental
Yuma, Proud Protector gives you the value in the command zone while also being able to dodge the commander tax by having the built in discount
The art and flavor text of this card became so beloved that Fblthp (pronounced fibble-thip) became a de facto mascot for Magic: The Gathering