Notably, since the Link-1 "Magical Musketeer Max" has no restrictions on its number of Link summons per turn (Unlike "Fiendsmith's Requiem"), a common play is to repeatedly Link Summon Max, use Max as material for other plays, then shuffle it back from the GY with Fiendsmith effects
Ishai, Ojutai Dragonspeaker gets better the more opponents you play with
The artwork is pretty nasty, too -- the Retainer would be 'just' a malnourished purple-skinned human, but the left side of his face has melted off and fused with the rest of his body, while his potbelly has transparent skin
Print lines are thin, visible lines that run across the holographic surface of holo cards
Whenever a creature leaves the battlefield, its counters move onto this artifact and can later be reassigned
Thankfully, that power translates very well into Magic: The Gathering, unlike The Ring of Lucii