Whenever you draw a card, create a 1/1 blue and red Insect creature token with flying and haste.
2UR: Draw a card, then discard a card.
When The Locust God dies, return it to its owner's hand at the beginning of the next end step.
Unlike The Scorpion God, Locust seems to be able to fit into many pre-existing decks and make them better, but this thread is to focus on what we can do if he takes the helm.
Aside from the obvious Skullclamp/Ashnod's Altar combo, any wheel effect would get you creatures, and there's no lack of cycling/discard matter cards in this set. Draw spells get you offense and defense, which counteracts one of the prime issue with controls deck; you get to do your business and the vacuum cleans the floor on its own, even weaker contrip spells can get you something extra. Coastal Piracy and Bident of Thassa are quite deadly with the locusts also.
So the directions I have in mind:
1) Tokens (with red pumps and Coat of Arms)
2) Wheel (alongside other draw/discard regulars)
4) Spellsling control
5) Artifact prison
I feel like Keep Watch is just about the perfect card here. If someone's trying to alpha strike you it makes a blocker for each attacker, or if you're already ahead and attacking you can just double all your guys and draw that number of cards.
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Current Decks GTitania midrange RGThromok tokens/goodstuff | UB Grimgrin zombie tribal GW Sigarda enchantress | R Godo voltron U Braids aggro | WR Kalemne punisher RU Mizzix storm | BUG Mimeoplasm competitive reanimator | UG Ezuri infect
While the previously mentioned Enter the Infinite is just game-over with this guy, I think he will fit in as another wheel's-matter general. It represents a possible win-condition with the use of high-draw, weaker than Niv-Mizzet, the Firemind, so maybe the "fair" or "casual" version of that the classic Niv Mizzy combo decks are trying to do.
I like the idea of a token/swarm generator in these colors. In my empty the warrens focused black+red storm deck (list), which typically wins before combat is even required due to impact tremors and purphoros, god of the forge, it would be incredibly easy to swap the black out of the deck for blue, plug The Locust God in the command zone, and just wheel+cantrip+ramp away until we hit purph/tremors and then set up a good storm turn.
edit; an even more casual and possibly more unique idea. With the locust god's return-after-death clause, and giving us at least one flying token every draw-step, this does represent a good izzet pillow-fort commander. Izzet-walkers anyone? A 4/4 flyer that craps out 1/1 flying chump-blockers, with appropriate counterspell backup, is a great way to protect a planeswalker. With karn/ugin and a few chandra/jace's acting as the inevitable win-cons, with the possible combo inclusion of tezzeret the seeker + the chain veil + 4-cmc tapping rock (everflowing chalice), that could be a very unique sort of brew.
Some choices may be questionable ... Dragon Mage could be too slow (although he's alright with Lightning Greaves or Swiftfoot Boots), Ludevic Probably isn't good enough, Pull from the Deep could be something else, I don't know if Drake Haven will do well enough, playing Overwhelming Intellect could be a bit too greedy, there's no graveyard hate (although you could use the new desert for that)... If you wanted to further combo-fy the deck, you could also make room for pieces that combo with Niv.