As if this ability weren't solid enough, if an opponent targets a permanent Mila's owner controls with a spell or ability, its controller can draw a card, meaning there are no truly safe ways for opponents to deal with that player's Planeswalkers
In addition, Electric decks can't recover Energy as easily as other decks, which is what makes Switch such a necessity in a Pikachu & Zekrom-GX deck
Creature Artifact - Shapeshifter Goblin Engineer When this creature enters, you may search your library for an artifact card, put it into your graveyard, then shuffle
Which, ultimately, makes it harder for your opponent to get rid of these characters while you gain access to more powerful abilities
It's like that time your grandma, forgetting about inflation, gave you fifty cents towards a new Lego set that cost twenty-five dollars