Destil said:Two words: Take 20.
Al said:You can't take 20 on ability checks, only skill checks.
Al said:
You can't take 20 on ability checks, only skill checks.
hong said:
PHB p.62: "The normal take 20 rules apply to all ability checks."

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.