Lightning, Lone Commando (Isshin, Two Heavens as One) Isshin, Two Heavens as One is one of the formats strongest aggressive commanders, though it never verges into broken territory like Winota
Its in the nature of the game that a strategy cant be optimal for both players
The best word to describe it is balanced, which we cant say for a lot of the cards to come
If a spell is exiled, it's removed from the stack and thus will not resolve
Packs with multiple rare cards do come up, but for the drop rate, take this update from Mark Rosewater
Shambling Remains Avatar of Discord Pyre Zombie Void Spike Jester Goblin Deathraiders Sarkhan the Mad Bituminous Blast Bladewing the Risen Blazing Specter Demigod of Revenge Igneous Pouncer Monstrous Carabid Torrent of Souls Wreaking Ball Wort, Boggart Auntie 10