The copies are created on the stack, so they're not "cast." Abilities that trigger when a player casts a spell won't trigger
Before we get started, though, here are a few other handy Magic: The Gathering guides from us
You can set up game-winning turns with Growth Spiral, produce oodles of mana with Frantic Search, or draw the game out with more copies of Chaos Warp than your opponents can keep up with
I don't even run a mono-black deck, but my vampire-themed black/red/blue deck had two Meathook Massacres anyway
There's quite a bit of a Lovecraftian vibe to the oceanic creature Marit Lage, and the Curse of Marit Lage prevents all islands from untapping
Its hanging around at between $3 and $5 right now, but I think its severely undervalued at the moment and a good card to get in low on