Yes, i bought some NIGHTMARE PACKs a long time ago that i keep in the game account to generate that part of the reward in SPS token. With the implementation of the game extension called SoulKeep, i opened them one by one, giving me some pretty strong towers for the moment. The image captured from inside this post shows what i currently own. !WEED !MEME !GIF

From what you can see at the moment i am on the verge of entering the League with number 3 - I suspect that by the beginning of this weekend maybe i will succeed. I'm still waiting for the reset of the hours to enter the tournament and that's only to fulfill the necessary conditions, eliminating the number of predetermined enemies

Look for example in the print screen of one of my towers - it has a green lock, which means that it is locked for a number of days just to be able to use it in defense from the SoulKeep extension - it is advisable to keep it locked

The next tower from the print screen made possible i will try to place it for sale - the reason why the lock on its page is not green.

Here's another example - with two CHARNEL PIT towers (one blocked for a few days and one not blocked)....for the sake of the example i'll try to combine them with each other, just to see if i'm allowed

And Voila - I was allowed the combination but, as you can see, i have the lock on green - so it is blocked only to be used in the defense of Soulkeep