Blinkmoth Urn
Artifact
At the beginning of each player's first main phase, if this artifact is untapped, that player adds 
for each artifact they control.
The vedalken embed such urns in their living artifact creations.
David Martin
Mirrodin (MRD)
• #145Rulings
The "precombat main phase" is the first main phase of the turn. All other main phases are "postcombat main phases."
(wotc • 2004-12-01)
The precombat main phase is the first main phase of the turn. All others are postcombat main phases, even if they technically occur before combat.
(wotc • 2004-10-04)
Rulings
The "precombat main phase" is the first main phase of the turn. All other main phases are "postcombat main phases."
(wotc • 2004-12-01)
The precombat main phase is the first main phase of the turn. All others are postcombat main phases, even if they technically occur before combat.
(wotc • 2004-10-04)