REDU format ruling
King Dragun

Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)"Lord of D." + "Divine Dragon Ragnarok"
Your opponent cannot target Dragon monsters with card effects. Once per turn: You can Special Summon 1 Dragon monster from your hand.
Rulings
- The first effect of "King Dragun" is a Continuous Effect. The second effect of "King Dragun" is an Ignition Effect.
- Your opponent cannot target a Dragon-Type Fusion Monster with "De-Fusion" while "King Dragun" or "Lord of D." is on the field because "De-Fusion" targets.
- "Divine Wrath" is NOT a card that targets, so "Divine Wrath" may be used against Dragon-Type monsters while "King Dragun" or "Lord of D." is on the field.
- You can chain "Divine Wrath" to the effect of "King Dragun" that Special summons a Dragon-Type monster.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.