TCG Rulings

• The Level of “Greed Quasar” increases at the same timing that monsters destroyed by battle are sent to the Graveyard.^[1]

• This card cannot be searched from the Deck by cards like “Sangan” that search based on ATK/DEF.^[1]

• If “Greed Quasar” is flipped face-down, its effect is reset and any increased Levels are lost.^[1]

• If “Skill Drain” is activated, “Greed Quasar” loses any extra Levels it has. Even if “Skill Drain” is destroyed, the extra Levels remain lost.^[1]

OCG Rulings

Mentions in Other Rulings

• "Sangan" cannot add "The Wicked Avatar" to your hand, since "?" is not a definite number.^[2]

• The ATK of "Fog King" is the combined Original ATK of the Tributed monsters after they were Tributed. If "Chimeratech Overdragon"/"Megarock Dragon"/"King of the Skull Servants" is Tributed, "?" ATK is treated as 0, so "Fog King" will have 0 ATK.^[3]

References

1. ↑ ^{1.0 1.1 1.2 1.3} Konami Gameplay FAQ: Crimson Crisis -- Card Rulings (version 2.0)
2. ↑ Konami FAQ: Can "Sangan" add monsters to your hand with indefinte ATK, like "The Wicked Avatar"?
3. ↑ Konami FAQ: When Tributing a monster whose Original ATK has changed - like "Megarock Dragon" - for "Fog King", what does the ATK become?