SOI did this well, but EMN is on another level, with the enabling cardssuch as Noose Constrictor or Exultant Cultistbeing both interesting in their own right and instructive to newer players on how to combo cards together to better effect
Ripple is also a separate trigger, so even if your spell is countered you still get the ripple effect
While a creature with an omen is on the battlefield as a creature, none of its omen text has any effect
To play a card, exert a number of Ink cards equal to the number inside the hexagon
The set contains no reprints, so all of the cards will need to find their role in the current landscape of the wider game
It probably makes sense to keep the commons with this keyword otherwise vanilla, but at uncommon and up ETB effects could be pretty interesting (click to enlarge): Here's a slight tweak on version 4 with a more generic, scaling ability: 5 I wanted to take one more crack at the idea that multiple bloodcallers could help summon a single creature at a reduced cost