Solar Corona Objective card
How-to play Objective "Solar Corona" - Star Wars Armada Explained (SWAE)
Instructions and hints by Karneck
Card Text[]
Setup: The first player must deploy all of his ships and squadrons before the second player. After the second player deploys ships and squadrons, the second player must choose 1 of the 3´ edges of the play area to be the corona.
Special Rule: While a ship is attacking, before resolving any attack effects, if any portion of the corona is inside the attacking hull zone's firing arc, the attacker must discard 1 die with a 
icon from the attack pool, if able.
Rules Clarification[]
The “Roll Attack Dice” step is resolved before this card’s Special
Rule effect is resolved. If there are no dice remaining in the attack pool after resolving this effect, the attacker can still resolve effects that add dice during the “Resolve Attack Effects” step.
Source: FAQ 5.1.1; 2020/03/09