There are just 270 Merfolk as opposed to 448 Goblins, 565 Zombies and 578 Elves
This can be before blockers are declared, after blockers are declared but before combat damage is dealt, during combat after combat damage is dealt, during the postcombat main phase, during the end step, or, in some unusual cases, during the cleanup step
Tannuk, Steadfast Second Although the artifact text looks like flavor text, some things like Portal to Phyrexia and Coveted Jewel play remarkably well with it, alongside the usual types of big creatures that do things threats, which stick around in the exile zone to be hardcast later, if need be
That means that Wizards now has to maintain three versions of the game
Which of these new Assassins make the best commander