For each opponent who does, you gain protection from that player until your next turn. Those are a lot of words, but it basically means good things for your fancy noble legendary creature
Images below are Wizards of the Coast Latest decks EDH 45 / 10 EDH 28 / 8 EDH 54 / 15 EDH 9 / 4 EDH 19 / 5 EDH 10 / 1 EDH 3 / 1 EDH 15 / 2 EDH 3 / 1 EDH 1 / 0 EDH 1 / 2 EDH 4 / 0 EDH 58 / 10 LEG 1 / 0 EDH 17 / 4 EDH 25 / 5 EDH 0 / 0 EDH 9 / 16 MDN 23 / 18 MDN 0 / 1 EDH 56 / 1 EDH 5 / 0 EDH 2 / 0 EDH 21 / 3 LEG 17 / 6 MDN 0 / 2 EDH 8 / 6 EDH 29 / 15 EDH 2 / 1 EDH 1 / 0 EDH 121 / 28 EDH 76 / 11 STD 0 / 0 MDN 7 / 2 EDH 52 / 15 EDH 209 / 31 EDH 12 / 1 EDH 0 / 0 EDH 1 / 0 MDN 72 / 22 EDH 3 / 2 MDN 2 / 0 EDH 68 / 32 EDH 2 / 1 EDH 1 / 0 STD 12 / 3 EDH 0 / 3 EDH 1 / 1 CAS 5 / 2 EDH 3 / 0 EDH 8 / 2 PDH 7 / 4 EDH 15 / 4 EDH 72 / 11 EDH 34 / 5 EDH 6 / 0 EDH 87 / 21 EDH 14 / 10 EDH 17 / 4 EDH 2 / 0 EDH 4 / 4 EDH 5 / 1 MDN 2 / 3 EDH 1 / 0 MDN 299 / 344 EDH 13 / 10 MDN 24 / 3
Here are the top favorites: Monkey.D.Luffy OP05-119 Luffy earns the top spot for his explosive swing potential and game-changing On Play effect
For example, if you put Null Profusion (an enchantment that says your maximum hand size is two) onto the battlefield and then put Venser's Journal onto the battlefield, you'll have no maximum hand size
With that said, I know for a fact that the zero decks we're tracking is an incorrect number, because I've seen folks rule zeroing Yorion as Companion multiple times out at conventions and the like
This gives the designers a much smaller environment to attempt to balance