Goat format ruling
Solemn Judgment

Card effect (current official text)When a monster(s) would be Summoned, OR a Spell/Trap Card is activated: Pay half your LP; negate the Summon or activation, and if you do, destroy that card.
Rulings
"Solemn Judgment" can not be used to negate a Special Summon if that Special Summon occurs as a result of another card effect.
- Special Summon monsters like "Dark Necrofear" that have their summons negated by "Solemn Judgment" are not considered properly summoned and may not be Special Summoned from the GY.
- Q: If a person uses "Solemn Judgment" and the resulting LP results in a decimal, what happens? Does it round up or down? A: If equal or more than 0.5, round up. If less than 0.5, round down.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Goat forum — sourced change requests get reviewed.