Arcane Golem?

Considered by many to be Terrinoth’s mightiest living weapons, the rune golems are hulking engines of destruction and the apex of runic magic and wizardry. They are impervious to all but the mightiest blows and highly resistant to the ravages of time. Unlike the Ironbound, rune golems are not automata, but appear to be semi-sentient beings with memories and the potential to develop personalities. As their name implies, all rune golems are kept alive with one or more runebound shards. It is the shard that seems to determine their attributes; shards marked with a rune of fire, it is said, make for golems that are quick to leap into combat and can project flame.