Summoning Icedrakes and elementals sounds pretty tough. Maybe if the mages ran a risk of being attacked by something nasty?
Perhaps you could make a Caelum Version of R'lyeh summoning gate? The evercold portal could summon a variety of cold theme creatures with a chance of the mage getting attacked or getting diseased (catching a cold?).
And changing Air to Water will allow them to enter water provinces a lot sooner. Something to keep in mind perhaps.
I want more animal summoning spells.
Claws of winter, 2 nature 1 water 1 air: Summons cold theme beasties.
Waters Call: 3 water 1 nature: Summons water animals like whales, sharks and squids.
Fangs of the Desert, 2 nature 1 earth 1 fire: Summons the likes of snakes, scorpions, camels and vultures.
Perhaps it's because I'm a biologist but an army of animals is too cool to ignore.
