Prismari, the Inspiration Prismari, the Inspiration is in the colors of storm already so you better get opponent's down in life to make the ward cost hurt
Quite frequently he gets cast as a 4/4 is not too shabby which does make him vulnerable to some white spot removal but otherwise has a quirky kind of hexproof where your opponent is scared of sending him to the graveyard so either halts attacking or chump blocks or takes 4 to the face each turn
How Much Will the Pokmon Happy Meals Cost
Prince Imrahil the Fair Prince Imrahil the Fair is a low-cost commander which makes it easier to get it out early and consistently recast it
Other good ones I run, apart from what what was already mentioned: All of these have been fine before any sort of Goblin synergy was introduced, and they don't all point at beatdown (though most do), allowing me to keep red interesting
The cost reduction applies only to generic mana in the total cost of green spells you cast