Crusader of Endymion

Edison Card Text
This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is face-up on the field, you can Normal Summon it to have it be treated as an Effect Monster with this effect: ● Once per turn, you can place 1 Spell Counter on a face-up card on the field that you can place a Spell Counter on. If you do, this card gains 600 ATK until the End Phase.
Stardust Overdrive • 2009-11-17
Targets
Note: the first part of the last effect
No Damage Step effect
Banlist • Unlimited
Interactions
Can Crusader of Endymion place Spell Counters on itself?!
Crusader of Endymion is face-up and you activate a Spell.
No. Its effect places counters on other cards, not itself.
If Crusader of Endymion's Gemini Summon is negated by Solemn Judgment, does Defender protect it from being destroyed?!
Crusader of Endymion attempts a Gemini Summon and Solemn Judgment negates the Summon.
No. If the Gemini Summon is negated, the monster is not treated as being on the field for the Summon, so Defender does not prevent its destruction.
Rulings
edisonformat.net
These rulings apply to all Gemini Monsters: https://edisonformat.net/rules/compendium/gemini-monsters
●The effect to increase this card’s ATK is resolved only if you place a Spell Counter.
●This effect targets the card you place a Spell Counter on.
●You can't place a Spell Counter on this card. If “Skill Drain” is activated, this card loses any ATK gained from its own effect.
●If a card like “Breaker the Magical Warrior” is having its effect negated, you can't place a Spell Counter on it with this effect.
●If the target of this effect is face-down when the effect resolves, no Spell Counter is placed and no ATK is gained.
edisonformat.com
The effect to increase this card’s ATK is resolved only if you place a Spell Counter.
This effect targets the card you place a Spell Counter on.
You cannot place a Spell Counter on this card. If “Skill Drain” is activated, this card loses any ATK gained from its own effect.
If a card like “Breaker the Magical Warrior” is having its effect negated, you cannot place a Spell Counter on it with this effect.
If the target of this effect is face-down when the effect resolves, no Spell Counter is placed and no ATK is gained.