A new Disney Lorcana release is about to light up little Illumineers gameplay
Giving allies all lifelink is beyond a beating and this is going to put games out of reach in Limited
When you can exchange cards with low situational value: creature removal against control decks, surplus lands in the mid-to-late game, etc
She can get cards like Cursed Scroll, Ponder, and Jace, the Mind Sculptor
Because the set was focused on wedges and the Dragonlords were ally-colored creatures, a misfit for a wedge set (wedge sets use two-color enemy pairs as those overlap two wedges), there wasn't a good home for them
In a way, its a little strange that we can have spaceships travelling between planets alongside the traditional convention of planeswalkers literally striding between realms of existence