Regarding godsend, if there is only one creature blocking during my attack, would I exile before the attack goes through, thus dealing combat damage to the player?
The blocker is removed before damage is dealt, but the creature is still blocked.
Once a creature becomes blocked, it remains blocked during that combat unless something specifically says that it becomes unblocked. Even if all blockers are removed before the combat damage step, the creature was still blocked and won’t be able to assign any combat damage to the defending player or planswalker unless it has trample.












