Spore's Evolution & Eleanora's Fixation With Fluffy Creatures
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Fenrir would prove to be a strong ally. Unlike Orcus he doesn't have as much overwhelming strength, but he has greater agility and intellect, which helps at listening to my own commands. The higher the intellect of beast spirits, the easier they can listen to my commands and also comprehend what I am saying. Orcus is very strong and can do simple things if I tell him to "charge" or "attack with all you got", but anything remotely more complex enters through one of his ears and come from the other, he's a dumb pig.
But Fenrir is different, his intelligence is rather high, making him very capable of learning and listening to commands, like normal real life dogs. Beast spirits also seem to same their memories even if they die. If they die, the ones I summon later will be able to recall what they learned before, so they constantly learn new tricks and more things. Fenrir evolved version also gives him greater senses of smell, making him an excellent tracker.