I would drop all of the shards if I were you... it's a cool card, but isn't useful in competitive play. You definitely don't need 4 soul reapers, as it can only be used effectively once per game. There are generally two types of competitive Zaladar decks. The first is dimension ripper zaladar, but since you say you're short on crystals, DR is probably too expensive. The second type is Here Be Monsters Zal. It uses Hbm to deprive your opponent of resources while you control the board with your allies and abilities. Here's the original thread with The "Here be Zaladar" deck
http://www.shadowera.com/showthread....ere-Be-Zaladar I would sugest using something similar to that. It's a bit expensive, but if you want to make it cheaper, replace the molten destroyers with Plasma behemoths.