Hello = ) Thank you for a great game! <3
I was playing Rexxar Deathstalker and noticed that Build a Beast’s mech/beasts combinations became undead/beasts only. As such mech based skills like Magnetic became obsolete.
I propose a system change wheras minions can get types added to them (so in above scenario the minion would have three types - Undead, Beast and Mech (or Undead, Beast, Mech and Elemental).
This would fix Craft a Custom Beast as well as open up for future cards like “Battlecry: Draw a minion and give it Undead Type”, “Minions in your deck have Elemental Type” and “Deathrattle: Strip enemy minions from all Types”.
I’m no coder but such a system oughta be easy to implement, right? Since it’s already kinda in the code with Craft custom Beast adding the undead type to beasts.
And I THINK that type changing could add a lot to deck building - Crossing Pirate Warrior with idk Bomb Warrior. It would probably do a lot for Death Knight 
That’s all 