Elfnote if it made a good endboard

• Harpie's Feather Duster is Forbidden
• at least 39 cards first released after Tengu's card pool closed (2011-09-17): Accel Synchron, Ars Magna "Citrinitas", Ars Magna the Corruption and the Purification, Ars Magna the Division and the Union, Ars Magna the Finite and the Infinite, Artmage Diactorus, Ash Blossom & Joyous Spring, Chaos Angel, Clear Wing Synchro Dragon, Cosmic Blazar Dragon, Crimson Dragon, Crystal Clear Wing Over Synchro Dragon, Elfnote Fortuna, Elfnote June Pride, Elfnote Lucina, Elfnote Power Patron, Elfnote Regina, Elfnote Seraphim Strelitzia, Elfnotes: Rhapsodia of Madness, Evenly Matched, Ghost Ogre & Snow Rabbit, Hey, Space Trunade!, Jet Synchron, Junoldo the Shadespirit Power Patron, Mediclius the Extraordinary Power Patron, Medius the Pure, Mulcharmy Fuwalos, Mulcharmy Purulia, Nibiru, the Primal Being, Number 90: Galaxy-Eyes Photon Lord, Odd-Eyes Solblaze Dragon, Pot of Sloth, Prohibited Power Patron Portal - Terminus, Purification Power Patron, Stardust Sifr Divine Dragon, The Great Gallant Bandit, Theorealize Past Lull, Theorealized Medius, Vidolium the Unstable Power Patron of Unity

Checked against the Tengu format Forbidden & Limited list (September 2011) as of 1 September 2011 and its card pool (no card first released after 17 September 2011), with the sizes and copy limits of a TCG deck.

Not checked: the TCG card pool (a card released only in the OCG).