
Prerequisite: 8th level, Mark of Warding
Your dragonmark has grown in size and power. This enhances your existing dragonmark, and the benefits are based on the mark that you already possess. A greater dragonmark provides the following benefits:
- The die type of your dragonmarked Intuition Die increases by one (for example, from a d4 to a d6).
- Increase one ability score by 1, either Dexterity or Intelligence, to a maximum of 20.
- You learn the spells knock, glyph of warding, and Leomund’s Secret Chest, each of which you can cast once without expending a spell slot or using a material component. The spellcasting ability for these spells is Intelligence. You must complete a long rest to regain the use of these spells.

Greater Dragonmark Feats
House Medani (Detection)
House Tharashk (Finding)
House Vadalis (Handling)
House Jorasco (Healing)
House Ghallanda (Hospitality)
House Cannith (Making)
House Orien (Passage)
House Sivis (Scribing)
House Deneith (Sentinel)
House Phiarlan (Shadow)
House Thuranni (Shadow)
House Lyrander (Storm)
House Kundarak (Warding)
Being able to cast Glyph of Warding without spending a spell slot is incredible, especially on campaigns with a lot of downtime/travel time.
Not sure how Leomund's Secret Chest would even work without material components.
This should note the sidebar that Leomund's Secret Chest *does* require a material component: