Emrakul, the Promised End

The first Eldrazi titan that ends the game not by landing, but by reaching across the table and taking the wheel. The mind-control clause is the design's real teeth: when you cast it, you seize control of an opponent during their next turn and pilot their deck into the ground (tap their lands into nothing, throw their attackers into losing blocks, fire their own burn at their own face, walk their board into a bad combat) before handing back a wreck and gifting them an extra turn that no longer means anything. That single ability transforms it from a top-end finisher into an active hostile takeover, the rare effect significant enough to warp a Constructed format around it purely on the non-game experience of watching an opponent pilot your seat. The cost reduction frames the whole thing as a graveyard-fueled payoff rather than a pure ramp target: each distinct card type in your yard shaves a mana, so a deck stocked with instants, sorceries, creatures, artifacts, enchantments, and lands turns thirteen into a number you can actually reach. Protection from instants is the quiet structural piece: it blanks damage-based and targeted answers coming from instants (the burn and point removal that would otherwise catch the body in the window between the steal and the swing), even if a well-timed board wipe or a non-targeting instant can still get there. The titan's earlier siblings closed games on impact. This one rummages through your board first.