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Hearthstone fanatics can now enter The Grand Tournament, as Blizzard has unlocked the huge new expansion on iOS and Android.

The update - which features Azeroth's best dueling it out for dominance in the frigid continent of Northrend - adds more than 130 cards, a new board, and fresh mechanics.

There's the "inspire" keyword, which lets minions grow in strength, restore health, and call for reinforcements. And there are jousts, which are one-on-one contests between random minions drawn from each player’s deck.

If the initiating player wins a joust, they’ll earn a substantial bonus.

The update is out now. Card packs can be purchased individually or in discounted bundles from the in-game Shop for gold or real-world currency. You can also win The Grand Tournament card packs as rewards in Arena Mode, or craft cards using Arcane Dust.