That seems like a very interesting way to approach a land-focused deck, especially by utilizing strong graveyard synergies and deserts
Black Sun's Twilight , Profane Command , Finale of Eternity , and Ochre Jelly could be good additions
He also can tap and sac four Food tokens - for no mana - to Overrun your team at sorcery speed, granting haste instead of trample
Particularly when it comes to age limits
Instant speed options like Ripples of Potential and Radstorm are fun since they work as combat tricks, but just increasing the power of your board each turn with Thrummingbird and Norn's Choirmaster poses serious issues for your opponents
After any die is rolled, before applying the result of that die, there's an opportunity for you to use those effects