Id love to be wrong about Viven as she seems like a fine choice for the current grindy metagame (if companions dont run over the format)
The most obvious home for Lukka is in Gruul Midrange, where decks are currently playing Modern all-stars like *checks notes* Glorybringer in the five-mana slot
The eleven-mana creature has its casting cost reduced by X generic mana, with X equalling the combined toughness of all creatures you control, meaning you can drop this bad boy as early as turn three in some cases
K'rrik, Son of Yawgmoth Tergrid, God of Fright // Tergrid's Lantern Yawgmoth, Thran Physician Sephiroth, Fabled SOLDIER // Sephiroth, One-Winged Angel Syr Konrad, the Grim Marrow-Gnawer Braids, Arisen Nightmare Tinybones, Bauble Burglar Shirei, Shizo's Caretaker Sheoldred, the Apocalypse Vito, Thorn of the Dusk Rose Maha, Its Feathers Night Skithiryx, the Blight Dragon With the basics covered, let's break down the list