You may change any number of the targets, including all of them or none of them
In short, Ashaya is a tank, and all you need to do is give them fuel to win the game
Jumpstart Boosters are a fast, fun way to jump into the game
And here's what happens, once you start drawing from this, your foe's will be like, "Well, they're already drawing from others, so I shouldn't worry about it and pay the tax." And then you draw more
The combination of mana to accelerate big equipment like Argentum Armor and Kaldra Compleat plus the ability to equip them for free sounds like a winning combination, especially with ward
This flexibility comes from the Faustian bargain design philosophy that gives black access to almost any effect in exchange for life and other resources