Was it legal to move gVex and another unit together after Nami's stun?
I had ready gVex exhausted in base, played Nami and used her stun, then moved gVex and a ready unit to a battlefield together. Was that legal?

You may pay as an additional cost to play me.
When you play me, if you paid the additional cost, [Stun] an enemy unit. (It doesn't deal combat damage this turn.)
When I hold, the next time you play a unit this turn, ready it and [Buff] it.
Artist: Six More Vodka
Card Set: Unleashed
I had ready gVex exhausted in base, played Nami and used her stun, then moved gVex and a ready unit to a battlefield together. Was that legal?
If I use Ezreal, Prodigy Explorer's power discount on Nami, Tidecaller's optional additional cost, do I need to spend power to play Nami at all? Can I choose not to use Vex's discount when it applies? Does Ezreal's discount let you play Nami without spending power?
When I hold a battlefield, Nami reads the next unit I play this turn, readying and buffing it. Does that buff from the passive open a reaction window for my opponent?
I have two units holding on the same battlefield. When I play my first unit, do both of Nami's delayed triggers target that same first unit, and can I respond with Meditation between the two resolutions? Do two holding Nami units both trigger on the first unit played?