

Enchanting
You roll a d20 and add your Enchanting skill and Intelligence modifier to the roll. If the total is higher than the Difficulty Check, you succeed. If it is lower, you fail.
Rolling a true critical gives you the benefits of the next check and a supercritical gives the next past that and so on.
Difficulty Check 12 (Easy)
add a half feat. or a full feat and a weakness.
Difficulty Check 17 (Moderate)
add one feat.
Difficulty Check 22 (Hard)
add 2 feats that don’t share tags.
Difficulty Check 27 (Very Hard)
add 2 feats that share tags, or 3 feats that don’t share tags.
Difficulty Check 32 (Legendary)
add 2 feats that share tags and 1 feat that doesn’t, or 4 feats that don’t share tags.
Difficulty Check 37 (Mythic)
add 2 feats that share tags and 2 feats that don't, or 5 feats that don’t.
Difficulty Check 42 (Impossible)
add 3 feats that share tags or 6 feats that don’t, or 2 sets of 2 feats that share tags.