http://forums.demigodthegame.com/380600
I definitely agree with pacov & nomilarac. You can also look at it this way... In any situation 1 person is making the investment and gimping oneself to benefit the team. Assuming 3000 gold investment @ .9 seconds per tick and 2 gold per tick, it takes that 1 person 1350 seconds (22.5 minutes) before they begin to receive they're ROI (personally).
In that same amount of time the other teamates Make 3000 gold additionally each with zero investment. In a 2v2 situation this is a direct transfer over time. It would be more effective to drop your teammate a $3k piece of armor that he needs.
From a team perspective:
In a 3v3 situation then it still takes the investor 22.5 minutes to break even but the team pool of gold breaks even after 450 seconds which is 7.5 minutes (as stated above a couple of times)
for 4v4 it takes 337.5 seconds (5.625 minutes) for the team to break even and 5v5 = 270 seconds (4.5 minutes.)
The person making the investment has to be a ranged attacker that doesn't rely on armor to stay alive. As pacov mentioned a regulus is the best person to make the investment. A tank would really be hurting their team if they got cur II regardless if its 5v5. An ice TB that has enough mana (ie. BotS) may be a candidate since they are mostly ranged.
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