May 9 inside the Special Promotions in Maplestory 2

    Shielding Ward
        Price: 5,500 NX 4,125 NX
        Duration: few days
    Shield Scroll
        Price: 2,800 NX 2,100 NX
        Duration: few days
    Perfect Innocence Scroll
        Price: 6,000 NX 4,500 NX
        Duration: 1 week

Lil' Ninja 90-Day Pet

May 3 to May 16 inside the Special Promotions > Limited Time category in Reboot world only.

Let the stealthy Lil' Ninja pet join your body on its adventures in Reboot World!

April 26 to May 9 inside MapleStory 2 Mesos the Special Promotions > Limited Time category in non-Reboot worlds only.
April 26 to May Buy MS 2 Mesos 9 inside Special Promotions > Maple Rewards Shop category both in Reboot and non-Reboot worlds.