It fills your hands with lands when it leaves the battlefield too, which either ramps you or gives you cards to discard once you cast it again
The only juggling I do nowadays is every so often when my kids bug me to "juggle something." I have total faith in my ability to creatively solve problemsso much so that my attitude is that there always is an answer
Cards that give you benefits for playing big creatures are good options
Sometimes people see these types of effects as boring, but theyre the bread and butter of a solid shell, and this one gets a tick from me
And my honest recommendation is that you start by getting that
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as a flashback cost), add any cost increases (such as kicker costs), then apply any cost reductions (such as that of Lyse Hext's second ability)