some people are still willing to buy the summoning packs, so why would they stop with these events 

also they want to take advantage of this situation ... most people opened shards during weekend, so they are likely to spend some more for more packs during event, also they said that we would get the "big" update next week with new units (i know, they say this for last few months, but let's believe, we will get it next week), so i think people will open now for event and when the new units will come out, another oppurtunity to release new packs with shards ...

Though there have been more summoning events, we have had a fair number of artifact events the last couple months.  If you save your +16 upgrades between them they are easy to finish even as f2p.

Do not care what others do, Only care what you would do.

I:

1) only pull blue shards when having x2 blue shards event.

2) only pull void shards when having x2 void shards event.

3) only pull yellow shards when having x2 yellow shards event + summon event/summon tournament. 

Trips said:

Though there have been more summoning events, we have had a fair number of artifact events the last couple months.  If you save your +16 upgrades between them they are easy to finish even as f2p.

Did you see the dates on the first two posts? :-D