Best way to kill a ice and fire dragon

[plucky creek]

What you need, good sir, is to call upon the gods for backup.

[chilly cipher]

Hit them with as much wither as possible and pray

[sterile summit]

Heals, or absorption if omega is installed

[keen mist]

what tier of spells do you have?

but honestly the best option is to always immbolize them

or to deal some damage without it getting close to you, if you have spare armor i recommend getting a healing spell and using that to get close and not die

[mystic hollow]

Tier 4 and below just spam anything good tier 5 pray

The only good way to kill a dragon is using a mekasuit or the mods weapons

Like fire lightning ice sword ect

[tight solar]

since coldsnap also like snares mobs you dont have to use snare and gravity barely works it only works if they are in the air but if you keep them in the stunloc with you should be fine