This is a very specific legendary card and most people think that it is useless. Stasis just creates spheres that stop enemies for seconds. Freezing time depends on your mana level. Compared to other legendaries, this card can not drastically change the battle and win the game for you. Also, the card can’t be the main card in a deck. The game is changing, so maybe Stasis will be rebalanced shortly. However, some people like this card, there are decks, in which Stasis plays its role well.
Best Deck to Use Stasis in Rush Royale
Harlequin, Inquisitor, Hex, Stasis, Shaman
The main card in this deck is Shaman, and Stasis is used as a support card, so you have to play around Shaman. And how to do it with the most efficiency?
At the initial stage of the game, play without a shaman and boost your table as much as you can. When the boss comes out, you should put shamans one by one, pushing your opponents with them. That is your middle and late game. But in the late game, you should find a time when the enemy is unprotected and attack him. Do it all game and you will definitely win.
Also, you can try other varieties of this deck and update it. However, you should play with other cards and decks. It will undoubtedly give you more pleasure in the game. And if you own Stasis, save it for better times, when it will be more efficient.