The Fang of Critias The Fang of Critias Send 1 Trap from your hand or field to the GY, that is listed on a Fusion Monster that can only be Special Summoned with "The Fang of Critias" (if that card is Set, reveal it), then Special Summon that Fusion Monster from your Extra Deck
Beacon of Immortality is a two card kill combo with it
Then theres Strip Mine because I own a fancy expedition version and I wanted to play it somewhere, and this deck has wiggle room for a few colorless utility lands
This is accomplished with artifacts like Illusionist's Bracers and Magewright's Stone which let you re-trigger Marrow-Gnawer
To find the correct version of this card, look for the SJC-EN002 code, which notes its exclusivity
However, keywords such as Trample allow excess damage to be assigned to the player (or planeswalker or battle)