You can only activate “Sasuke Samurai #2”’s effect during your Main Phase 1 or 2 because it’s an Ignition Effect.
You can only activate “Sasuke Samurai #2”’s effect once per turn.
The effect of “Sasuke Samurai #2” stops in the End Phase, and after the effect ends, you can activate Trap Cards or Quick-Play Spell Cards during the remainder of the End Phase.
While “Sasuke Samurai #2”’s effect is active, you can’t activate the effects of cards that activate in the Graveyard like “Black Pendant” and “Statue of the Wicked”.
You cannot activate the effects of Continuous cards like “Skull Lair”, “Ultimate Offering”, or “Mass Driver” while “Sasuke Samurai #2”’s effect is active.
Netrep Rulings:
Spell and Trap effects may be activated in a chain to “Sasuke Samurai #2’s” effect.