While it might be unlikely for Muldrotha to see play, I could imagine it as a 1- or 2-of in a BG Delirium-esque midrange shell, perhaps after our current (The Scarab) God of Standard rotates this Fall
You may put a creature card with mana value 4 or less from among them onto the battlefield
Once Urza is in play, your mana explodes, letting you chain spells and hold up interaction effortlessly
Shadowheart will go into any deck that loves graveyard stuff, giving us the card that well reanimate along with a chance of drawing the spell thatll do it
And if you have mana acceleration by something like a Sakura-Tribe Elder, then you can return the STE to your hand on turn four and recur something else the next turn and then cast the STE and use it again
Value is determined by the number and clarity of additional 'printings.' Unclean Rollers: Similar to the ghosting misprints above the rubber transfer rollers are sometimes not cleaned properly from previous print jobs, leaving residual ink that gets transferred onto cards
