With 34442 Glint from the end of the season, and another 6250 from the leaderboard, I made a decent 54K Glint ready to spend.
My first move was to buy some 10 Rare cards:
I even had one card gaining a level, reaching a nice 2 Ranged attack.
And of course, all the remaining Glint goes towards 69 cards (69, he he he):
Looks like Lady Luck is on my side, as four cards went up to level 7.
My last try, opening the Gladius packs.
To my surprise, I got an Epic card to level 3, and it got a Cleanse skill:
Another rare Gladiator card to level 3, improving the ranged attack.
And to make it look perfect, even a common Gladiator card got upgraded, gaining the Retaliate skill.
Waiting time for now, up to the end of the month.