mtg ingest cards o:ingest or t:processor or processor) · Scryfall Magic: The Gathering Search Ingest - MTG Mechanics Explained

Basilica Guards Basilica Screecher Blind Obedience Crypt Ghast Kingpin's Pet Knight of Obligation Life Insurance Pontiff of Blight Sorin of House Markov Sorin, Ravenous Neonate Syndic of Tithes Syndicate Enforcer Syndicate Heavy The Kingpin of Crime Thrull Parasite Tithe Drinker Treasury Thrull Vizkopa Confessor

Legendary status is a core feature of Commander, but why limit yourself to just one legend

Each of those cards has an activated ability which includes discarding that card as part of its cost

A copy of a spell or ability is controlled by the player under whose control it was put on the stack

Its that easy

These cards are, once again, only available in collector boosters, while the typical Showcase Dossier cards can be found in play boosters