Unlike many effects that grant additional combat phases, you don't get an additional main phase with Godo, Bandit Warlord's ability
If Tymna and Bruse Tarl are your commanders, your deck may contain cards with red, white, and/or black in their color identity, but not cards with green or blue
As Interceptor returns to the battlefield because of its triggered ability, you choose which player, planeswalker, or battle it's attacking
The nice thing about Jarad is that sacrificing the Cactuar is part of the cost, so theres not much your opponents can do at that point other than counter the ability
Also, for an additional cost of one of each mana type, you may untap all attacking creatures, giving them trample, lifelink, and haste until the end of the turn, and trigger another combat phase