Gift of fertility do not reduce CD of summon gatling gun on draksar fabricator, summon hive on skeezick arthromancer, chuck wood on woodchuck, chuck young freeze bug on freeze bug keeper, swamp teaching on spawnpool guardian, lay egg on draksar broodmother, summon land mine on tortun minelayer, barricade barrier on lodestone builder ,valdaci sacrifice crossbow on valdaci bolter,there are some other chuck ability and summon relic but i believe those do not work too.Haven't test it on biogenesis,rockgenesis arryo rift, incubate, bone prison, gift of ironwood, reconstruct, find pupil, find source crystal, clone matter, essence claw, make ice, spirit harvest, anyone confirm these work or not?
I believe it only works on champions that have abilities called Summon: X where X is a summoned champion. It works with things like Summon: Serpent and Summon: Beast. Abilities like Biogenesis, which summon champions but is not a Summon: X ability, is not affected. Same goes with abilities that summon relics.
But the ability state it lower cooldown of units which should include relics, lay myx pupae cooldown also affect by it although it is a relic
