Main Phase 2

Main Phase 2
Main Phase 2 is a Main Phase conducted after the Battle Phase. As a Main Phase, most actions that could normally be performed in Main Phase 1 can also be performed in this phase.

Only during Main Phase 2
Some Cards and Effects can only be activated during Main Phase 2, such as "Emergency Assistance". Some Xyz Monsters, such as "Stellarknight Constellar Diamond", can be XYZ Summoned using an XYZ Monster as XYZ Material only if XYZ Summoned during Main Phase 2.

In Main Phase 2, you may:
Normal Summon/Set a Monster (you can only perform one Normal Summon/Set per turn, so you cannot Normal Summon/Set in both Main Phases).
Special Summon a Monster(s).
Manually change the battle position of a Monster, provided that Monster did not declare an attack during the Battle Phase, it was not Summoned or Set during that same turn, and it has not already manually changed its battle position that turn.
Flip Summon a Monster, provided it was not Summoned or Set during that same turn.
Activate Ignition Effects, such as those of "Blackwing - Gale the Whirlwind".
Set Spell/Trap Cards.
Activate Spell/Trap Cards of any Spell Speed. You cannot activate Quick-Play Spell Cards and Trap Cards in the turn you Set them.