Which is better?

Ice Serpent comes out ahead on trade value, but the right pick depends on your goal — read both and decide.

Ice Serpent: The highest-value pet in the game and the premier defender. Its freeze ability locks down thieves mid-raid, making it the cornerstone of any anti-steal build.

Black Dragon: A Super-rarity defender that torches raiders. Pairs with Ice Serpent for a lockdown plot that few thieves get through.