Each Assassin token can enter attacking a different player, planeswalker, or battle, and they don't need to be the same ones that the Assassins you control are attacking
Make your plans for SCG CON Tampa!
If the chosen enchantment is an Aura, you choose what it enchants just before Estrid's Invocation enters the battlefield
In an energy deck though, this thing is going to be popping stuff all the time, especially with things like the above-mentioned Aether Refinery or Wrath of Skies where you get a bunch of extra energy if you want
Still, this fixed mashup is a great way to be a bit more aggressive with your Food strategy (as I feel Food decks tend to be a bit more passive in nature)
Hulking Raptor may not be the most glamorous card in The Lost Caverns of Ixalan, but its hard to deny its straightforward effectiveness, playing with the best of what green mana has to offer