Kaiba corp

* A good way to Special Summon this card on the first turn is to Normal Summon "Scrap Recycler" and dump this card to the graveyard. Then discard twoLevel 4 machines to special summon it, and then use "Recycler's" effect to draw 1 card.
o You only have to discard 8 or more Levels' worthof Machine-Type monsters from your hand in order to Special Summon this card. It needs not be exact 8 unless that's all you can manage.
oAlso, this card itself can discarded from your hand along with another Machine-Type as a cost to Special Summon itself from the Graveyard (or hand if youchoose to Special Summon a separate, different copy of "Fortress").

* You can use "Machina Gearframe's" effect to search for "Machina Force"and then discard that card for this card's Special Summon. This would prevent you from drawing a potentially bad card in a pinch.

* If youNormal Summon "Machina Soldier" and use its effect, you can Special Summon this card from your hand without a cost.

* You can add "Toon CannonSoldier" with "Toon Table of Contents" for an easy level 4 monster that you can use as half of the cost for this card's special summoning requirement.* You can discard Ancient Gear Golem" or "Ancient Gear Gadjiltron Dragon" to special summon "Machina Fortress", then use either "Ancient GearWorkshop" or destroy "Geartown" (for "Ancient Gear Gadjiltron Dragon" only).

* Use any of the "Gadget" monsters, to add another to you to your hand