Threaten effects, or effects that temporarily steal opposing creatures, aren't super popular in Commander, though the equation certainly changes when that threat's attached to a 10/10 and also morphs the 'borrowed' creature into an annihilating monster for the turn
Once its online, you can sacrifice lands to draw cards
It's also going to be heavily scalped
The cost is reduced by the greatest power among creatures you control so it can easily go down to an affordable cost
Booster Fun: Lurkers, Japanese Showcase, Tech, Monsterous Reflection and Double Exposure As teased in the opening segment, there's some really unique booster fun variants coming in Duskmourn
Each one was given to the tournament's winner every year