Double strike

[Rontron]

If a 2/2 with double strike is blocked by three 2/2 with no double how does the this play out?

[The1337Magician]

The attacking player chooses how to seal out the damage. Normally, the first strike would go to one creature, the normal damage to the next and all but things killed by first strike would deal damage back.

[Kaleo42]

2/2 double vs. 2/2, 2/2, 2/2

First strike damage
Assign to 2 damage to a creature blocking
2/2 double kills one
2/2 vs. 2/2, 2/2, 2/2

Regular damage step
2/2 assigns 2 to a blocker(s) (multiple creatures can only be assigned damage if lethal is marked on the first creature assigned damage)
Blockers assign damage
4>2/2 vs. 2/2, 2/2<2
2/2 double vs. 2/2, 2/2

[Gorzo]

The way double strike works is that the creature deals it's power in damage during both the normal damage phase AND the first strike damage phase.

So the way this will play out:

Blockers are declared.
First strike damage phase begins. You, as the attacker, get to choose where your 2 first strike damage goes. Presumably, you hit one of the 2/2 blockers with 2 damage. It dies.

Normal damage phase begins. 2 2/2 blockers remain. Again, as the attacker, you choose where your 2 damage goes. It goes there, and both 2/2s deal their damage to your double-striker.

End result: everything but 1 blocking 2/2 is dead (of the attacker's choosing).

Edit: Kaleo beat me to it nice touch with the red for dying creatures, I like it.

[Kaleo42]

You cant have my back if I let you post first 😝

[Pleeb]

2/2 double vs. 2/2, 2/2, 2/2

First strike damage
Assign to 2 damage to a creature blocking
2/2 double kills one
2/2 vs. 2/2, 2/2, 2/2

Regular damage step
2/2 assigns 2 to a blocker(s) (multiple creatures can only be assigned damage if lethal is marked on the first creature assigned damage)
Blockers assign damage
4>2/2 vs. 2/2, 2/2<2
2/2 double vs. 2/2, 2/2

I was unaware that creatures have to be assigned lethal damage.  I'm always amazed by what I don't know.

509.2.: Second, for each attacking creature that's become blocked, the active player announces that creature's damage assignment order, which consists of the creatures blocking it in an order of that player's choice. (During the combat damage step, an attacking creature can't assign combat damage to a creature that's blocking it unless each creature ahead of that blocking creature in its order is assigned lethal damage.) This turn-based action doesn't use the stack.
Example: Vastwood Gorger is blocked by Llanowar Elves, Runeclaw Bear, and Serra Angel. Vastwood Gorger's controller announces the Vastwood Gorger's damage assignment order as Serra Angel, then Llanowar Elves, then Runeclaw Bear.