It's not allowing me to summon when I have 3 monster cards on the field. But when I had a "start game with 3 monsters on the field against Vagabond it allowed the special summon. Anyone having this issue?
Paleozoic Canadia gets banished when it leaves the field as a monster. Tokens don't go to the graveyard either. Only monsters that go to the graveyard will work to summon Light Ruler.