This effect activates when the attack is declared. It is a Trigger Effect and can be chained to. The act of drawing and revealing a card is resolved when the Trigger Effect resolves. If a face-down
"Neo-Spacian Glow Moss" is attacked, its effect does not activate.
The Spell Card effect (
"…You can change this attack to a direct attack instead") only works when
"Neo-Spacian Glow Moss" is attacking. Not when it is attacked.
If a Spell Card is drawn and revealed, and you choose to convert the attack to a direct attack, it causes a replay.
If
"Neo-Spacian Glow Moss" attacks directly with its effect and
"Skill Drain" is activated in response,
"Neo-Spacian Glow Moss" can no longer attack directly and (another) replay will occur.
If
"Neo-Spacian Glow Moss" is attacking, and a Trap Card is drawn and revealed for its effect, it changes to Defense Position and is no longer considered an attacking monster, so damage calculation is not performed.
If a monster attacks a face-down
"Ancient Lamp", and
"Ancient Lamp" re-directs the attack to
"Neo-Spacian Glow Moss", the effect of
"Neo-Spacian Glow Moss" will not activate, because the effect of
"Ancient Lamp" causes it to miss the timing.
This effect does not target.