Huang Zhong, Shu General [Portal Three Kingdoms] Maximum Crisis you cannot activate it

you cannot activate it

Set: Dragons of Legend: Unleashed Card type: Field Spell Rarity: Ultra Rare All monsters you control gain 500 ATK

you may have target player mill two cards

Set: The Shining Darkness Card type: Quick Play Spell Rarity: Ultra Rare Attack: 0 Defense: 0 All Synchro Monsters on the field are changed to Defense Position

Sometimes it's not

Huang Zhong, Shu General [Portal Three Kingdoms] Maximum Crisis you cannot activate itSet: Portal Three Kingdoms Type: Legendary Creature Human Soldier Rarity: Rare Cost: {2}{W}{W} Huang Zhong, Shu General can't be blocked by more than one creature. "Virile in war, he kept the north in fear; His prodigies subdued the western sphere."