Tannuk, Steadfast Second Tannuk, Steadfast Second warp speeds, hyperdrives, or whatever other science reference you want your red creatures and artifacts
Go Wide decks achieve this by playing team-wide pump spells, or any other effect which affects each creature you control. Youre effectively multiplying the impact of the spell by the number of creatures you control, without paying any additional costs and its not very hard to control a LOT of creatures if youre really focused on it
Inalla, Archmage Ritualist gives you temporary copies of your wizards, Azami, Lady of Scrolls turns them all into extra card draw, and Kaza, Roil Chaser gives you cost reduction based on the number of wizzies you control
Its basically Colossal Dreadmaw and Arvad the Cursed all in one
Before Khans of Tarkir , delve only existed on three cards: Tombstalker, Logic Knot, and Death Rattle, all of which were reprinted in Modern Masters