zeitgeist is OP as hell, sure it doesnt work on nomral minions, but this is basically a ranged, neutral entropic decay that leaves a body on the board. instant kill on an aegis barriered 4/9001 owlbeast that also leaves a 3/4 body
terraform feels like alter beast but with golems instead of battle pets. it feels more like a vet card to be honest and there is little reason to use this card when you just give them a viable minion in exchange for a game ending one. it just feels like a worse aspect of the fox.
swarmhai? thats new. but how much damage? 1, 2? is the damage random or can they choose to go all face? 6/5 seems a little high statted for a songhai minion with potential to end the game. it just doesnt seem fully thought through.
tome of the tempest seems kinda strong. free spell based removal that does better than phoenix fires without wasting phoenix fires as removal. not to mention you get a free spell in hand which is always loved in songhai, especially arcanysthai. the name could use a little work though, tempest is lyonars thing
phagos is honestly what arcane devourer should have been and removing the arcanyst tags. it fits only with an arcanysts only deck and even then arcanysts are typically minions that gain value while on the board. the combos you could pull of with this card are insane since you could double phagos into rite obliterate. people would be super salty with this card just like darkfire sacrifice because it doesnt have the "this turn" limiter. all in all, i like this card the most.