Dota 2 - Midas vs Tome (7.06 Update)

Tome of Knowledge gives 500 exp once per 10 minutes (50 exp / min)

but limited to one hero per team, at the cost of 150 gold per use.

10 minutes >> 500 exp (3.33 exp / gold)

20 minutes >> 635 exp (4.23 exp / gold)
30 minutes >> 770 exp (5.13 exp / gold)
40 minutes >> 905 exp (6.03 exp / gold)

Hand of Midas gives 1308 exp in 10 minutes (130.8 exp / min)

On average, using on large neutral creep or range creep or siege creep.

Requires a capital of 2150 gold (around 7 minutes of farming)

Midas break even at approx 18 minutes of constant use (cost around 25 minutes in total), below is the time after acquired Midas.

10 minutes mark (0.60 exp / gold)
20 minutes mark (1.20 exp / gold)
30 minutes mark (1.80 exp / gold)

40 minutes mark (2.40 exp / gold)

SUMMARY:
In this patch, Midas is less viable, more emphasis in lane creeps and deny.