CR 21 monsters

The 4 monsters of challenge rating 21 in the fifth-edition SRD.

MonsterCRTypeAC / HPEditions
Ancient Black Dragon21Gargantuan dragon22 / 367SRD 5.1 SRD 5.2.1
Ancient Copper Dragon21Gargantuan dragon21 / 350SRD 5.1 SRD 5.2.1
Lich21Medium undead17 / 135SRD 5.1 SRD 5.2.1
Solar21Large celestial21 / 243SRD 5.1 SRD 5.2.1