While a player wants to destroy/exile an opponent's Planeswalker and spends resources to do so and their opponent dedicates resources to protecting it, the roles are reversed with Battles, as its controller wants to dedicate resources with attack and damage their permanent, while the opponent must prevent its counters from being reduced to zero in order not to deal with a greater threat
This human warrior can use her Healing Tears during your end step to reanimate a creature with mana value equal to the amount of life that youve gained this turn
Most of the time this is just going to be a Darksteel Ingot without the indestructability, making it worse in most of those decks
this can be Level 1, 2 or 3 and, as youd expect, youll want to start with a Level 1 battle deck
Also, kudos for WotC on the design of these cards, because most of the spells are conditional spells