idea: new way to unlock certain characters

Have a repeating events to unlock special characters for groups. the events have 8 possible tiers, and you have 1 battle completion per event. all events require 5 characters of the same tag. all teams also get a special ability similar to the assault events
t1- 10 shards (requires 2*, recommend lvl 20)
t2- 15 shard (requires 3*, recommend level 30
t3- 25 shards (requires 4*, recommend lv 50)
t4- 35 shard (requires 5*, recommend lvl 60)
t5- 40 shard (requires 6*, recommend lvl 70)
t6- 45 shard (requires 7*, recommend lvl 80)
t7- 50 shard (requires 7*, recommend lvl 80, 3* mods)
t8 heroic - 60 shards (requires 7*, recommend lvl 85, 5* mods, very very difficult)

there are events wednesday and sunday. the possible event will be random among the following:

General Hux, First Order. defeat the resistance. special ability grants advantage 1 turn, and damage immunity 1 turn

Rey (Starkiller) Resistance. defeat the first order. special ability grants hp up, and crit immunity for 2 turns

99. clones. defeat the droids. special ability, deal basic and call an assist

droideka. seperatists. defeat the naboo royal guard and princess amadala. special is retaliation and offense up for 2 turn

thrawn - empire. crush the rebellion.

pre-visla, scoundrels