A Ritualist wizard is one that specialises in casting spells as rituals. As a ritualist grows in their expertise of this type of casting they can learn to cast them more quickly or even learn rituals most wizards could not.

Ritual Savant

Beginning when you select this school at 2nd level, the gold and time you must spend to copy a spell that has the ritual tag into your spellbook is halved.

Ritual Diversity

Starting at 2nd level you have learned how to cast ritual spells normally beyond the scope of regular wizardry. When you add spells to your spellbook, be it from gaining levels in this class or from other sources, you can add the spell to your spellbook even if it is not from the wizard spell list as long as it has the ritual tag. Spells added through this feature are considered wizard spells for you.

CREATOR'S NOTE: Non-Wizard ritual spells from the Basic Rules have been added so you should be able to add them the same way as any other spell. For any other non-wizard ritual spells you will need to create a homebrew copy of it and add it to this subclass or whole wizard class if preferred. There is no way to add the spells and have them function as wizard spells (can be prepared, etc). I apologise for any inconvenience this causes.

Quick Rituals

Starting at 6th level, the time added to cast a spell as a ritual is decreased to 1 minute instead of 10.

Efficient Casting

Beginning at 10th level, when you cast a spell as a ritual you can ignore material components that do not list a gold cost. For spells that do list a gold cost you can reduce the gold cost required to 1/5 of what it lists.

Ritual Master

Starting from 14th level, if you have a spell of 3rd level or lower prepared that has a ritual tag, you can cast that spell using its normal casting time, instead of its ritual casting time, without requiring a spell slot. Spells cast this way still benefit from your Efficient Casting feature. This feature can be used a number of times equal to your Intelligence modifier and you recover all uses after completing a long rest.