The Ice Dragon

Ice dragons are typically known for being cold hearted and animalisticly cruel. The oldest of them however can see the bigger picture and find use in some mortals and bestow power to them.

Through this patron, mortals can attain the powers of ice and winter, unleashing a frigid storm against their enemies the likes of which they have never seen. However, all of this comes at a price.

Some dragons wish to be paid in gold from the treasures collected by adventurers, to be added to their hoard. Other more twisted dragons, wish for the soul of the human they make a contract with, to offer unto their god queen when their warlock dies. Rarer yet, some dragons simply crave companionship, and see mortals as children needing to be taught to become stronger.

Whatever the reasoning, a dragon can become a powerful ally, or a deadly enemy, so a deal should not be instantly dismissed, but should be thought carefully about, as the wisest and oldest of dragons have as much shrewdness as they do power.

 

Icy Scales

As your draconic patron forces his magic into you, the ordeal hardens your body to the chilling effects that the magic has upon you. You also learn the tongue of their kind.

When you choose this patron at level 1, you gain resistance to cold damage and learn the draconic language.

Frigid Prison

As the dragon you made a pact with grows pleased with your progress, it bestows upon you more of it's magic, allowing you to immobilize your enemies with the bitter sting of winter.

When you gain this feature at level 6, you can use a bonus action to force a target to make a Dexterity saving throw. If they fail, they take 2d6 of cold damage and are encased in a cage of ice which is the exact size of the foe that you encase.

They can break free of this cage by making a strength check against a DC of 15. This increases to a DC of 17 at level 10, and a DC of 19 at level 14.

This can be used twice per short rest.

Winter's Roar

As the dragon's icy magic begins to encase your very soul, more power yet is drawn into you, giving you the power to unleash a blast of frigid enemy onto your foes from across the battlefield.

When you gain this class feature at level 10, you gain the cone of cold spell. You can also choose to have your eldritch blast inflict cold damage if you wish.

At level 12, you also gain the wall of ice spell.

Neither spell counts against your spells known, and the first cast of each of these spells per long rest does not cost a spell slot.

Winter Dragon's Retribution

At level 14, as your bond with the dragon you are linked with grows, it may be convinced to lend more strength than it would normally be willing to give.

As an action, you can make a persuasion check to your patron to beseech it's aid. If you succeed in this check, your patron will directly intervene in your favour. You can only make three checks per long rest, and can only have one success per long rest. At level 20, you make this check with advantage.

It is up to your DM exactly how this interaction takes place, and the result upon a success.