All of the new Whispers in the Well products will be available at local game stores starting Friday, November 7th, followed by a wider release one week later on Friday, November 14th
At best, you would play 1 copy of Loris in order to potentially have her recycle Normal Traps later on into the game or have her be a Summon off of Ties of the Brethren in order for you to set a Trap from GY after Tributing a monster on your opponent's turn
The first Umastryxs effect will still resolve banishing a monster, and youll only lose 1 card, being your Nemesis Warrior, which isnt really a loss, because once you flip the new Umastryx you can revive the Nemesis Warrior for free, making a loop of sorts to evade effects
You can obtain the Joltik (1-Diamond rarity) card by opening Eevee Grove from Eevee Grove set
You can also use it as a way of bringing out a weaker Pokemon from the back that will be more vulnerable to your attacks.