These are your best bets for creatures to sacrifice, since they can very easily return to play
One thing to keep in mind is that Galeas ability doesnt affect when we can cast those cards
Spin Out: Destroy a creature or Vehicle for three mana
Basically, if card advantage almost doesnt matter because there is too much of it and you often cant use all of your cards, tempo becomes king

Aberrant Abomination of Gudul Academy Raider Acquisition Octopus Aerial Extortionist Angler's Shield Anowon, the Ruin Thief Ant-Man, Reformed Rogue Ascendant Spirit Assassin Gauntlet Barbed Servitor Basim Ibn Ishaq Battle Angels of Tyr Bearer of Overwhelming Truths Beast, Erudite Aerialist Belligerent Guest Bello, Bard of the Brambles Bident of Thassa Bilbo, Luckwearer Biorganic Carapace Black Panther, Hope Enduring Black Widow, Deadly Hunter Blitzball Stadium Blurry Beeble Bottomless Pool // Locker Room Bottomless Pool // Locker Room Bred for the Hunt Broodbirth Viper Buster Sword Captain Howler, Sea Scourge Catlike Curiosity Chain Assassination Combat Research Creepy Crawler (playtest) Curiosity Crafter Curious Altisaur Curious Inquiry Curious Obsession Cyclonus, the Saboteur Daring Saboteur Darkblade Agent Deadeye Brawler Deepfathom Skulker Dictation Quillograph Dimir Cutpurse Domesticated Watercourse (playtest) Driven // Despair Driven // Despair Elegy Acolyte Ellivere of the Wild Court Enduring Curiosity Escape Detection Exsanguinator Cavalry Ezio, Blade of Vengeance Faerie Aerie Family's Favor Fathom Feeder Flitterwing Nuisance Frostcliff Siege Garza Zol, Plague Queen Gateway Sneak Gitaxian Mindstinger Glissa Sunslayer Glitch Interpreter Goben, Gene-Splice Savant Goggles of Night Gorbag of Minas Morgul Grazilaxx, Illithid Scholar Haliya, Ascendant Cadet Herd Heirloom Heroes in a Half Shell Hired Heist
