Basilisk

In the midst of the wilds, surrounded on all sides by miles and miles of swamp and rolling forests, lay a statue. A statue that happened to exactly fit the description of the boy we'd been searching for. The detail was unparalleled. His horror-stricken face seemed like it might start screaming at any moment. The arms were broken away, but within the remaining stumps there were details of muscle and sinew chiseled into the stone. Then the underbrush on the far side of the clearing parted. A lizard the size of horse slid towards us. Fangs as long as shortswords dripping with a yellow-grey venom.
-Seeker Herolm

Classification: Infused Beast 

Major Elements: Earth 

Minor Elements: None 

Habitat: Mountains or other rocky climes, elsewhere if prey is plentiful

Basilisks, also know colloquially as "stonebiters", are the largest known lizard to inhabit Telus (assuming, as most scholars do, that tales of "dragons" are false). Though their nickname may seem to be derived from their ability to turn a victim to stone, it is actually due to their unusual diet. Minerals in the stone that their powerful stomachs cannot digest are used to reinforce their thick hides, often giving them a metallic sheen.

Most Basilisks make their homes underground and are actually no larger than a dog (50-100 lbs). They will most often nest in secluded branches of caves or other ready-made burrows, including underground structures or mine shafts.

Though exceptionally hardy and resilient, the giant lizards rarely trouble with humans, preferring to forage in solitude for the minerals they eat. They are however incredibly territorial towards others of their species and will sometimes find themselves cast out into unknown territory due to social pressure. 

Many old tales do claim the basilisk can petrify with just a gaze but the truth is much more mundane. After centuries living beneath the earth the basilisk's venom has become infused by the element. Their venom is believed to be largely a defensive mechanism, or perhaps a vestigial trait from a more aggressive ancestor.

If the reports are true however, it may be that some of the displaced reptiles have actually managed to make better use of their Earthy venom, surviving as hunters rather than mere foragers. These predatory basilisks have also been known to grow extremely large (300+ lbs). This may be a sign that they are managing especially well in their new roles. Guards in the frontier cities should be especially wary of growing populations of the beasts and cull them before they can establish nests.