Hapatra, Vizier of Poisons is definitely the best home for Patron, but I can see it being a powerhouse elsewhere too
So long as you have three energy counters to pay, you can keep making Robot tokens
After all, why tap a land for 2 mana when you can play a card like Frantic Search and effectively tap it for 3, or use a Snapcaster Mage to just have your Islands tap for 3 mana outright before using a Time Spiral to refill your hand and untap your lands
I think this card obviously slots in Valiant decks, and is a nice turn three play, suiting up a Heartfire Hero or Cacophony Scamp
----Meld---- Ragnarok, Divine Deliverance Legendary Creature - Beast Avatar Vigilance, menace, trample, reach, haste When Ragnarok dies, destroy target permanent and return target nonlegendary permanent card from your graveyard to the battlefield
This card also allows its user to accrue value over time, as whenever Esika's Chariot attacks, its controller creates a copy of any token they control