Rogues Beyond 20th Level (DK)

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Human and half-elf characters can advance beyond 20th level as bards. Only human characters can advance that high as thieves. At these advanced levels, rogues do not become beings of another nature. They do, however, gain new abilities.
 Rogues Beyond 20th Level
Level	Thief/Bard	Hit Dice (d6)
21 	2,500,000 	10+22
22 	2,800,000 	10+24
23 	3,150,000 	10+26
24 	3,500,000 	10+28
25 	3,900,000 	10+30
26 	4,300,000 	10+32
27 	4,750,000 	10+34
28 	5,200,000 	10+36
29 	5,700,000 	10+38
30 	6,200,000 	10+40
The rogue gains 2 hit points per level beyond 20. A rogue's THAC0 never improves beyond 11. 
Rogue Illusionists: All rogues, both bards and thieves, gain the ability to cast spells from the illusionist school when they attain 21st level. They are essentially wizards, specifically preservers, with the usual restrictions for spell books and memorization. However, rogue illusionists have no weapon or armor restrictions. They are not specialist mages, so they do not gain the specialist advantages. Further, they are not subject to the 16 minimum Dexterity score for specialist illusionists. 
All spellcasting rules that apply to wizards also apply to rogues. They use components, memorize new spells out of their own spell books, and so on. 
Rogue illusionists are preservers. They do not cause defiling damage when they cast their spells. 
Level	1	2	3	4	5	6	7
21 	2	1	—	—	—	—	—
22 	3	2	1	—	—	—	—
23 	4	3	2	1	—	—	—
24 	4	4	2	2	—	—	—
25 	5	4	3	2	1	—	—
26 	5	5	4	3	2	—	—
27 	5	5	5	4	3	1	—
28 	5	5	5	5	4	2	—
29 	6	6	5	5	5	3	1
30 	6	6	6	6	5	4	2
Here are the available illusionist spells. 
1st-Level: audible glamer, cantrip, change self, Nystul's magical aura, phantasmal force, spook, ventriloquism. 
2nd-Level: blindness, blur, foolss gold, hypnotic pattern, improved phantasmal force, invisibility, Leomund's trap, mirror image, misdirection, whispering wind. 
3rd-Level: illusionary script, invisibility 10' radius, phantom steed, spectral force, wraithform.
4th-Level: fear, hallucinatory terrain, illusionary wall, improved invisibility, minor creation, phantasmal killer, rainbow pattern, shadow monsters, vacancy. 
5th-Level: advanced illusion, demi-shadow monsters, dream, major creation, seeming, shadow door, shadow magic. 
6th-Level: demi-shadow magic, eyebite, mirage arcana, mislead, permanent illusion, programmed illusion, project image, shades, veil. 
7th-Level: mass invisibility, sequester, shadow walk, simulacrum.