Intellect

In vanilla WoW a druid gains 15 mana for each point of intellect.
We also gain 1% to spell crit for every 60 points of intellect at level 60.
According to this, the base spell crit for a Druid is 1.8%, which is included in your results

Your intellect:

Add Arcane Brilliance (rank 2) +40 Int
Add Elixir of the Sages +18 Int
Add Gift of the Wild(rank 2) +12 Int
Add Greater Blessing of Kings 10% to stats
Add Moonkin Aura 3% to crit

Results for 100 intellect

Intellect: 100
Mana pool: 2464
Spell crit chance: 3.47%
Calculations based on level 60

What can I cast with 2464 mana?
These are some rough estimates of how many times you can cast a spell based on your mana pool. This does not account for passive mana regenration, innervate, pots, etc.

Healing Touch
Rank	# of Casts	Casts TS	Casts MG	Casts TS &MG
1	98.56	109.51	108.31	120.34
2	44.8	49.78	49.23	54.7
3	22.4	24.89	24.62	27.35
4	13.32	14.8	14.64	16.26
5	9.13	10.14	10.03	11.14
6	7.36	8.17	8.08	8.98
7	6.08	6.76	6.69	7.43
8	4.98	5.53	5.47	6.08
9	4.11	4.56	4.51	5.01
10	3.42	3.8	3.76	4.18
11	3.08	3.42	3.38	3.76

Rejuvenation Rank # of Casts Casts MG 1 98.56 108.31 2 61.6 67.69 3 32.85 36.1 4 23.47 25.79 5 18.25 20.06 6 15.4 16.92 7 12.64 13.89 8 10.49 11.52 9 8.8 9.67 10 7.36 8.08 11 6.84 7.52		Regrowth Rank # of Casts Casts MG 1 20.53 22.56 2 12.02 13.21 3 8.8 9.67 4 7.04 7.74 5 5.87 6.45 6 4.83 5.31 7 4.01 4.4 8 3.33 3.66 9 2.8 3.08

** TS is 5/5 Tranquil Spirit
** MG is 3/3 Moonglow

**Your crit is usefull to know if you take the Nature's Grace talent however in vanilla HoTs can not crit. Healing Touch can crit, the direct heal portion of Regrowth can crit, but NOT the HoT part of Regrowth or Rejuvenation.