Level 10 EARTH Machine/Effect 3000/2500

Cannot be Normal Summoned/Set. Must be Special Summoned by a card effect. (Quick Effect): You can target 1 Machine monster you control; destroy that Machine monster and all monsters your opponent controls with ATK less than or equal to it. If a face-up EARTH Machine monster(s) you control, except "Machina Citadel", is destroyed by battle or card effect while this card is in your GY: You can Special Summon this card. You can only use each effect of "Machina Citadel" once per turn. 

Can target itself for a pseudo-Raigeki, or can remove something you left on field like Rubber Band Shooter to prevent an OTK. It’s almost always a 1-time use, since you won’t be able to summon it from the GY through its own effect. 

Run 1

Normal Trap

Target 1 Machine monster you control; Special Summon 1 "Machina" monster with a different name from your hand or Deck, and if you do, destroy that targeted monster. You can banish this card from your GY, then target 3 of your Machine monsters that are banished and/or in your GY; shuffle them into your Deck, then draw 1 card. You can only use 1 "Machina Overdrive" effect per turn, and only once that turn. 

Can target any Machine, including leftover Speedroids or something like Rubber Band Shooter/Auroradon. Very nice recycling as well, one of the few options the deck has for recurring its banished cards. 

Run 3