Forge of the True Dracos (MP17-EN032) - 2017 Mega-Tins Mega Pack 1st Edition

If a "Dracoslayer" monster, that is not a Pendulum Monster, and a "Dracoverlord" monster are on the field: Shuffle as many cards on the field as possible into the Deck, then you can Special Summon 1 "Dracoslayer" or "Dracoverlord" monster from your Deck, ignoring its Summoning conditions.