If a Sand Soldier with Eye of the Herald attached is on a battlefield, can you play Azir Ascendant to the same battlefield, recycle 1 green to target that Sand Soldier (already on the same battlefield), switch the equipment to Azir, and does this create a token? Also, how does Azir interact with Vilemaw's Lair - can Azir swap with a unit on that battlefield?

Ruling: You can target a unit on the same battlefield with Azir's ability and switch equipment to Azir, but no token is created because the unit did not actually move. When Azir swaps with a unit at Vilemaw's Lair, both units end up at Vilemaw's Lair due to "can't beat can" rules.

Sequence:

• Play Azir Ascendant onto the same battlefield as Sand Soldier with Eye of the Herald
• Recycle 1 green to target the Sand Soldier on the same battlefield
• Switch Eye of the Herald from Sand Soldier to Azir
• No token is created because there was no movement

Nuances:

• If a unit is targeted to move to the battlefield it is already on, it is not considered to have moved
• For Vilemaw's Lair interaction: if either Azir or the target unit was originally at base, both units will end up at Vilemaw's Lair after the swap