Usually, most PCs rely solely on their Dexterity ability score modifier for their initiative; however, there are ways to get bonuses to initiative. How high can this bonus get?
For example, there's the Alert feat (PHB, pg. 165):
Always on the lookout for danger, you gain the following benefits:
- You gain a +5 bonus to initiative.
The Dread Ambusher class feature of the ranger Gloom Stalker archetype (XGtE, pg. 42):
At 3rd level, you master the art of the ambush. You can give yourself a bonus to your initiative rolls equal to your Wisdom modifier.
And the Tactical Wit class feature of the wizard War Mage archetype (XGtE, pg. 60):
Starting at 2nd level, your keen ability to assess tactical situations allows you to act quickly in battle. You can give yourself a bonus to your initiative rolls equal to your Intelligence modifier.
So, a level 6 character who was a Ranger 4/Wizard 2 who took the Alert feat at level 4 would have an initiative bonus of 5 + DEX + WIS + INT.
So, if my Ranger 4/Wizard 2 example above made it all the way up to level 20 (Ranger 18/Wizard 2) and used all their ASIs to max out DEX, INT and WIS, they would then have an initiative bonus of 20.
What character build (up to level 20 if necessary) gives the maximum initiative bonus?
Or, is the one I have outlined here the highest you can get?
For the purposes of this, let's assume the PC is a human (+1 to all ability scores) whose player was lucky enough to roll all 17s during character creation; hence the character has +4 in every stat (for convenience). Anything RAW is allowed; multiclassing, feats, magic items, etc, but nothing from Unearthed Arcana. No temporary effects. Things that grant advantage or half-proficiency count, but nothing temporary.