Rules Change: Attacker no longer assigns blocker order during declare blockers

[Dunkoro]

Final paragraph of this article:
https://magic.wizards.com/en/news/feature/foundations-mechanics

`Here's the change: Damage assignment order no longer exists. If a creature is facing multiple opposing creatures in combat, that creature's combat damage is assigned and dealt as its controller desires during the combat damage step. Other players won't necessarily know what's going to happen.

Revising the earlier example under the new rules, my 5/5 attacker gets blocked by your 3/3 and your 4/4. It's now the declare blockers step, after blockers are declared, our last opportunity to do anything before combat damage is dealt. I pass priority. You have that Giant Growth in hand. You can still save the creature of your choice. We'll say you want to save that 3/3, probably for the same reason I wanted it gone, so you pump it up to a 6/6. We move on to combat damage, and now I get to assign my creature's 5 damage any way I want. Most likely, I'll take out your 4/4, as it's the best I can do. But maybe I have, you know … plans and would rather deal 3 damage to the 6/6 and 2 damage to the 4/4. That's okay, too.`

[JayDi85]

Original discussion in #11567