Valve have increased the chances of getting a free Arcana in Dota 2 thanks to a new feature

Valve changed the way rewards drop in the Winter version of Quartero's Curios, and now the chance to get a free Arcana during the event is much higher, because you can pick one of 5 available rewards.

Players on social media already share how the reward list looks in the event when reaching level five. As you can see, now players are given a choice of one out of 5 rewards, which are presented in Immortal and Arcana rarity. Even though the chance to get a free Arcana is still low, but now it's increased, and the player can also get the set he actually wants.

Credits: Valve Corporation

In other words Valve reduced the randomness when choosing rewards, which really made the Dota 2 community happy.

You can also check all the guaranteed rewards of the Winter Quartero's Curios that can be earned for completing the event.