Vivien's Invocation

Seven-mana green dig has a long lineage of overpriced put-into-play effects, but this one bolts a removal clause onto the cheat that changes what you're actually buying. Most cards in the family ask you to find a fatty and pay full freight elsewhere for interaction; here the creature drops directly onto the battlefield (no cast, so no cast triggers fire) and immediately turns its power against an opposing creature, so the spell that develops your board also clears the path in front of it. The damage keys to the body you put in, which fuses the dig and the removal into a single decision: you aren't hunting for the biggest creature so much as the one whose power lines up against whatever you most need dead. The random-bottom clause is the quiet tax on the whole thing; you look at seven, take at most one, and forfeit the ordering on the rest, so raw card advantage never enters the picture. That structure asks for a deck deep in creatures (whiffing is otherwise real) with enough power at the top of the curve that the damage half is worth aiming. At sorcery speed and a full seven mana, it is a top-of-curve play by construction: the thing a green midrange or ramp deck does on its biggest turn rather than a piece of an interactive back-and-forth. The synthesis is what earns the cost: cheat a creature into play, then resolve a one-sided, no-risk shot in the same breath.