If you doubt why playing spells at instant speed is crucial, try playing against this guy under its counter pillow strategy
Ramp cards like Claim Jumper and Loyal Warhound give white decks additional ramp, though its never as good as the other colors
It has an admittedly narrow use case, but tripling your attack force ends games quickly, and it helps generate long-game advantages with cards like Solemn Simulacrum and Baleful Strix
To support our haymaker strategy we're using cards like Harmonic Prodigy to double the amount of exiled spells and cast triggers off Jeleva, Diabolic Vision to ensure we hit something good with Jeleva, Oblivion Sower to ramp out the exiled lands, and Clout of the Dominus to give Jeleva haste and protection
If you like those one-shot effects, Maskwood NexusMaskwood Nexus can turn everything into a Changeling, permanently
Here's a small sample of protection spells: It's definitely worth running some protection cards for both Jodah and the rest of your board, but don't go overboard trying to protect Jodah