[Endoperez]

If you use custom spells, you have to use the spell ID. If you use vanilla spells, you can use name or ID. While it's possible to use custom spells, their ID may change depending on which mods you have enabled, and thus should be either circumvented or avoided.

#onebattlespell "Howl" is the easy way.

Dr Praetorious' spell list also lists interesting spells like "10 wolves" (53), "4 lions" (52) or "3 wolves" (65). Use one of these to summon the wolves.