Many of the players here will advise you to hold on to those shards until we have 2x boosted summoning rates. It is a good advise. But I say, if you are a new player, like palying like for few days, I suggest you summon. Every day you hold on to those shards you are delaying your progression in the game.

If I am playing on your account, i will summon. And besides, I dont have luck on my summons during 2x boosted rate event. All of my legendaries came from regular summon rate.

i saved over 1,5 months shards and on double event i used them ....nothing...not even a good epic

last week on queen eva event i opened 15 ancient and 2 sacred shards because of the summon event:

result was unbelievable: queen eva, candraphon, nethril, bad el kazar

this time on valkyrie event i opened 5 shards:  hakkon smashlord inside

so thats rng...but all my legis are from not a double event.......but chances are higher to get good epics....for legendaries its minimal from 0,5 to 1 %

I always tell beginners to summon there shards for the first 2 weeks of game play.

The reason why is because as a new player - you lack a lot of hero options.

You really need to bolster up your hero collection.

Save any hero which is Rare - Epic - Legendary

After the first 2 weeks of game play, You will acquire Shaman (7 Day Login) & Jizoh (14 Day Login)

If you haven't pulled any good hero by that time, You can just build up your Shaman & JIzoh.

Than you can begin the process of saving your shards for future events