Whats more is that Gramma Tala, Spirit of the Oceans ability, Do You Know Who You Are?, is perfect when paired with many of the other great sapphire cards in Into the Inklands
That said, unlike Teferi, all of the Flash pieces in Standard get wiped by the effect of Ultima, which makes this combo a lot less powerful
And while Spooky Sights effect may be somewhat niche (reminding me of an un-singable Under the Sea), its Enchanted artwork should appeal to anyone with a love for Halloween frights
Back in the day, it was Duneblast or Divine Reckoning, or maybe Slash the Ranks
You can also try to incorporate Summon synergies with Garnet, Princess of Alexandria, Summon: Choco/Mog, and Summon: Fat Chocobo, all of which would work fine in a GW go-wide shell
If there aren't eight or more cards in your graveyard at that time, the ability won't resolve and none of its effects will happen