It doesnt have many direct angel synergies and works best in aristocrats-style shells, but once it gets going, it turns every creature death into meaningful value and takes over games through card draw and steady life drain
One Piece TCG Nami Deck Guide: OP11-041 Build and Strategy The synergy runs deeper than "draw cards and use Triggers." Three specific mechanical interactions make Blue and Yellow better together than either is alone
Each Play Booster contains 14 cards, including 14 rares or mythics, a guaranteed foil, and a chance at stunning Booster Fun treatments
Enduring Enchantments has some stellar Constellation/Constellation adjacent cards, with Composer of Spring likely to be the one to watch
However, that only counts the number of unique cards with different names - in reality, there are a few more cards
Finally, while I think FLIP effects won't be triggered by choosing "Flip Summon" since the mechanic action of flipping is not happening, it will trigger effects which happen "At Flip Summon", like Guardian Sphinx which shuffles into Deck all opponent mons, Sauropod Brachion changing all other mons to coward position, Exxod inflicting 1000 damage by summoning other monsters in Attack Position and claiming it was a Flip Summon, World Legacy - World Armor laughing to be Summoned, Swarm of Crows discarding from the moment it's Summoned, etc