Here are a few examples of commanders that have such abilities: Squee, the Immortal Squee, Goblin Nabob Hogaak, Arisen Necropolis Norin the Wary The Indomitable Jarad, Golgari Lich Lord Built-In Cost Reduction Using a commander like Ghalta, Primal Hunger or The Pride of Hull Clade helps you get around commander tax by reducing your commanders cost
Instants reward that patience better than any other card type
In one card, you get removal, ramp, card draw, tutors, and lifegain
Both have a lot of mythics that were hyped for casual and Commander play but not obviously great for Standard (these are the Gods for Hour of Devastation and the Dragonlords for Dragons of Tarkir ), both are sets without a rare land cycle, and both are the final sets in their respective blocks
Thundering Sparkmage Thundering Sparkmage could have some potential if it read X damage to any target. Unfortunately it says X damage to any creature or planeswalker . Build-your-won Flametongue Kavu is always a fine payoff for a strategy, but always begs the question why you wouldn't just play Flametongue Kavu instead
Winning official tournaments will become a little easier