"Up to 25x" != 25x

25x != 25%

25% chance != guaranteed 1/4

Funnily enough a switch to a 25% chance on legendary pulls would probably cause a lot of money to be spent/shards to be yeeted.

According to ayumi, there are 255 non-void legos in the game. call it 240 because some of them can't be pulled from shards

1/240= 0.0041, in other words, you have a 0.4% chance of gettting a specific lego

When there's a 25x, they add extra chances for that champ to the pool of available champs, just like drawing names out of a hat.

So it becomes 25/264 = 0.0947, or if you get a lego, there's a 9.5% chance it'll be the 25x one.

Assume 20 sacred shards per mercy, you could expect, by statistical average, to need to pull roughly 200 sacred shards to get the 25x lego.

More, since it starts at 15

Ok, so basically it's "find the lady", won't waste any more cash on these boosted summons. 

If you're just an occasional, small time spender, and/or don't have a huge budget for gaming, the only deals worthwhile here are the monthly gem packs, and sometimes the forgepass. Those are definitely the best value for the cost

We do love the progressive system so much.  /s

Flat 25% chance?  Would absolutely lead to increase in shard spending.  Im out here just trying to diamond hand everything now. 

Whenever you go 30+ days between purchases, you will get the Warrior's Circle.  IMO, 4 voids and a lego book is a good deal for $10.

I have not spent in 2 yrs, but I used to buy the Warrior's Circle and the Gem Pack on the same day, and then not spend again until the Warrior's Circle popped back up, and then do it again.

That Fyna progressive? Yeah, my sacreds would've been gone. POOF.