magic the gathering collectors booster box Tarkir: Dragonstorm Collector Pack Her faction has become the Machine Legion Wizards of the Coast Magic:

C Common Elemental HERO Steam Healer X WATER Level 5 [ WarriorFusionEffect ] ATK 1800 DEF 1000 "Elemental HERO Burstinatrix" + "Elemental HERO Bubbleman" Must be Fusion Summoned

70 cards are priced from $2.44 to $375.99

Very few of them end with something you'd actually want to keep

I think white might be a slightly better color for this, since you have access to Elesh Norn, Mother of Machines

One-Hit Kill: By attacking into monsters with all four Numeron Gates in succession, and using their effects, their ATK will increase exponentially, usually allowing for an OTK with either two 4000 ATK or one 8000 ATK direct attack(s)