Mila, Crafty Companion // Lukka, Wayward Bonder

Whenever an opponent attacks one or more planeswalkers you control, put a loyalty counter on each planeswalker you control.

Whenever a permanent you control becomes the target of a spell or ability an opponent controls, you may draw a card.

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+1: You may discard a card. If you do, draw a card. If a creature card was discarded this way, draw two cards instead.

−2: Return target creature card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of your next upkeep.

−7: You get an emblem with "Whenever a creature you control enters, it deals damage equal to its power to any target."