Snow Leopard

The Snow Leopard is the first Legendary card most players will obtain, since it's the first one that can be obtained through the campaign.

Strategies
With a Energy cost of 3 and the Energize ability, the Snow Leopard is a very good option in any mid game decks. This card works exactly the same as the Otter, being a tank you can use at the beginning to take the Energy and field advantage, in difficult situations to resist field disadvantage through Energize and its great Health (while still making a good amount of damage) and being pretty much one of the most versatile cards in the game.

Its only downside is its below-than-average Attack Time. 5 seconds isn't a bad Attack Time, but there are faster options in terms of damage. This is also the only reason why you might want to use the Otter instead, since sometimes 1 second can make a huge difference. However, in most cases the Attack Time is worth the risk: high Health combined with an insane Damage is not something all cards in the game have.

Also, from Level 3 its Attack Time has less impact, because the Strike Back ability means that it can inflict more than 1,700 damage in 5 seconds (providing that the enemy card attacks first or at the same time).