In terms of direct synergies, your options are The Sixth Doctor, The Fourth Doctor, and The Eighth Doctor

Freerunning Ezio Auditore da Firenze 73%inclusion 348 decks 474 decks Etrata, Deadly Fugitive 3.4%inclusion 16 decks 474 decks Altar Ibn-La'Ahad 3.4%inclusion 16 decks 474 decks Evie Frye // Jacob Frye 2.5%inclusion 12 decks 474 decks Ramses, Assassin Lord 2.5%inclusion 12 decks 474 decks Edward Kenway 2.1%inclusion 10 decks 474 decks Ezio, Blade of Vengeance 1.5%inclusion 7 decks 474 decks Ratonhnhakton 1.3%inclusion 6 decks 474 decks Basim Ibn Ishaq 0.8%inclusion 4 decks 474 decks Queen Marchesa 0.6%inclusion 3 decks 474 decks Etrata, the Silencer 0.6%inclusion 3 decks 474 decks Noctis, Heir Apparent 0.5%inclusion 2 decks 425 decks Achilles Davenport 0.4%inclusion 2 decks 474 decks Lydia Frye 0.4%inclusion 2 decks 474 decks Adwal, Breaker of Chains 0.2%inclusion 1 decks 474 decks Burakos, Party Leader // Sword Coast Sailor 0.2%inclusion 1 decks 474 decks Slimefoot and Squee 0.2%inclusion 1 decks 474 decks Kelsien, the Plague 0.2%inclusion 1 decks 474 decks Y'shtola, Night's Blessed 0.2%inclusion 1 decks 474 decks Cromat 0.2%inclusion 1 decks 474 decks Cadric, Soul Kindler 0.2%inclusion 1 decks 474 decks Pir, Imaginative Rascal // Toothy, Imaginary Friend 0.2%inclusion 1 decks 474 decks Mr

It also increases the value of Domri Rade to the point of being one of the better card draw effects you can play assuming you are both reasonbly well sorted for red fixing and are playing a decent creature count
There are a few ways to get new Galarian Pokemon starter packs, but the Galar Partners Tin is one of the best