You usually wouldnt want to mill someone who was playing a commander like Muldrotha, the Gravetide , because youd almost be doing the same thing as letting them draw 10 cards

OP01-033 Izo OP01-033 Izo OP01-033 Izo OP01-033 Izo OP01-041 Kouzuki Momonosuke OP01-041 Kouzuki Momonosuke OP01-041 Kouzuki Momonosuke OP01-041 Kouzuki Momonosuke OP01-047 Trafalgar Law OP01-047 Trafalgar Law OP01-051 Eustass"Captain"Kid OP01-051 Eustass"Captain"Kid OP01-052 Raizo OP01-052 Raizo OP01-052 Raizo OP01-070 Dracule Mihawk OP01-070 Dracule Mihawk OP01-078 Boa Hancock OP01-078 Boa Hancock OP01-120 Shanks OP01-120 Shanks OP01-120 Shanks OP01-121 Yamato OP01-121 Yamato OP02-004 Edward.Newgate OP02-004 Edward.Newgate OP02-013 Portgas.D.Ace OP02-015 Makino OP02-015 Makino OP02-015 Makino OP02-018 Marco OP02-018 Marco OP02-018 Marco OP02-018 Marco OP02-089 Judgment of Hell OP02-089 Judgment of Hell OP02-089 Judgment of Hell OP02-089 Judgment of Hell OP02-096 Kuzan OP02-096 Kuzan OP02-099 Sakazuki OP02-099 Sakazuki OP02-106 Tsuru OP02-106 Tsuru OP02-106 Tsuru OP02-114 Borsalino OP02-114 Borsalino OP02-117 Ice Age OP02-117 Ice Age OP02-117 Ice Age OP02-121 Kuzan OP02-121 Kuzan OP03-003 Izo OP03-003 Izo OP03-003 Izo OP03-003 Izo OP03-055 Gum-Gum Giant Gavel OP03-055 Gum-Gum Giant Gavel OP03-055 Gum-Gum Giant Gavel OP03-056 Sanji's Pilaf OP03-056 Sanji's Pilaf OP03-056 Sanji's Pilaf OP03-056 Sanji's Pilaf OP03-057 Three Thousand Worlds OP03-057 Three Thousand Worlds OP03-057 Three Thousand Worlds OP03-057 Three Thousand Worlds OP03-060 Kalifa OP03-060 Kalifa OP03-060 Kalifa OP03-079 Vergo OP03-079 Vergo OP03-079 Vergo OP03-089 Brannew OP03-089 Brannew OP03-089 Brannew OP03-089 Brannew OP03-094 Air Door OP03-094 Air Door OP03-094 Air Door OP03-108 Charlotte Cracker OP03-108 Charlotte Cracker OP03-110 Charlotte Smoothie OP03-110 Charlotte Smoothie OP03-110 Charlotte Smoothie OP03-110 Charlotte Smoothie OP03-113 Charlotte Perospero OP03-113 Charlotte Perospero OP03-116 Shirahoshi OP03-116 Shirahoshi OP03-116 Shirahoshi OP03-121 Thunder Bolt OP03-121 Thunder Bolt OP03-121 Thunder Bolt OP03-122 Sogeking OP03-123 Charlotte Katakuri OP03-123 Charlotte Katakuri OP04-029 Dellinger OP04-029 Dellinger OP04-029 Dellinger OP04-031 Donquixote Doflamingo OP04-031 Donquixote Doflamingo OP04-032 Baby 5 OP04-032 Baby 5 OP04-032 Baby 5 OP04-036 Donquixote Family OP04-036 Donquixote Family OP04-036 Donquixote Family OP04-044 Kaido OP04-044 Kaido OP04-056 Gum-Gum Red Roc OP04-056 Gum-Gum Red Roc OP04-056 Gum-Gum Red Roc OP04-056 Gum-Gum Red Roc OP04-083 Sabo OP04-089 Bartolomeo OP04-089 Bartolomeo OP04-089 Bartolomeo OP04-089 Bartolomeo OP04-095 Barrier

It can be too powerful or break the game's mechanics
However, all attacking creatures untap as those abilities resolve, not as the combat phases start
Time will tell, I suppose
Zwischen Leben und Tod verluft ein schmaler, unsichtbarer Pfad und auf diesem Weg steht Athreos, God of Passage