YouTube TCG channels begin popping up
If the Treasures were generated per creature killed, this card would be busted, but you can trigger it every turn , not just yours, so playing smart means interaction on your opponent's turns can net you mana for your expended spell
If running the Souls engine, then strongly consider including Loading
However, as weve just seen, The Emperor [27-098L] also has a powerful Auto Ability that triggers when he is put into the Break Zone
That said, Reyas just a 4/6 with no relevant abilities besides flying, it costs 9 mana in mono-white, and you need to reach your next upkeep just to get the ability
Kaya could end up gaining some level of steam if the mirror match becomes frequent