QUOTE(Ichy @ Mar 28 2013, 16:37)

May be affected by some trainings and is affected for sure by difficulty setting.
Well I have 2 Scavenger and 3 LotD, but no Archaeologist.
And got another Twinkling Snowflake at arena, this time with Hard difficulty.
13 5 Something just dropped from the sky! Obtained [Twinkling Snowflake]
.
.
.
0 1 Initializing arena challenge #12 (Round 24 / 25)