To the Slaughter is interesting because it can deal with both Dragonlord Ojutai and Jace, Vryns Prodigy (sometimes at the same time), but it seems too bad to play maindeck in significant numbers if token decks are at all popular
I just hope the decks that use this as a General don't get too degenerate
Also, the rise of Flynn boosts the development of the elated industry and distribution process
You dont need to wait to get value from both parts of this spell, either: its almost always impactful, and four mana for just one of these effects is worth the flexibility this affords
Starfall Invocation is much, much better and allows you to play the one-key-creature control strategy with Haughty Djinn much more easily
The Phasing of Zhalfir phases out nonland permanents, not just creatures, so dont forget this card can also buy you a couple of turns of relief from a devastating stax piece or combo engine