Spins with Iron Coins on the Wheel of Tzaraziko will no longer give
solstice candy or coal. In their place they will give wonder crystals!

Wonder crystals have another functionality in that they can be used to
fill in any slot in a curio piece--including rares! You specify either
slot 1-9 or "rare" on a curio piece and the wonder crystal will fill in
that slot (when you show a partial curio piece, the first item is the
rare and the others are slots 1-9). Syntax is CURIO WONDERCRYSTAL
<partial> SLOT <slot>.

Penned by My hand on the 18th of Tzarin, in the year 438 CE.