==Characteristics==Each Planeswalker has an affinity to a [[color]], in some cases two or even three colors. A Planeswalker's [[deck]] may generally contain only [[card]]s including an affinity color, or colorless cards. The upper limits on the number of Creature, Spell, and [[Support]] cards in the deck are also Planeswalker-specific.  Planeswalkers begin at level 1. Planeswalker [[level]]s may be increased by spending [[Resources#Mana Runes|Mana Runes]] ({{Runes}}), to a maximum of level 60. Higher level Planeswalkers are more powerful. Generally, the more colors a Planeswalker has affinity with, the more expensive they are to purchase and level up.  === Mana bonuses===Planeswalkers released after [[Hour of Devastation]] follow simple rules for their mana bonuses: #All three-color Planeswalkers' mana bonuses add up to seven. #All two-color Planeswalkers' mana bonuses add up to eight. #All mono-color Planeswalkers' mana bonuses add up to nine. [[Origins]], [[Battle for Zendikar]], and [[Oath of the Gatewatch]] Planeswalkers all have lower mana bonuses than this, as do others before the [[Ixalan]] set.  Unusual mana gain is part of the design of colorless walkers, and there is no easy rule to define their bonuses.  There are clear benefits to playing Planeswalkers with high spike bonuses with mana conversion, and when playing without mana conversion, to use Planeswalkers with a balanced spread of bonuses.  Some Planeswalkers have abilities that benefit their mana bonuses; notably [[Karn, Scion of Urza]], [[Sarkhan Unbroken]], [[Tamiyo, Field Researcher]] , and [[Ugin, the Spirit Dragon]].  == History==Hibernum, the original developers of MtGPQ, made a complex system for Planeswalkers, of not only ascending power, but ascending ability costs. All Planeswalkers had abilities straight out of the gate, at level 1. Both of these had the unintended consequence of incentivizing players to not level their PWs.  Oktagon, from their first set of [[Ixalan]], made a uniform system for PW leveling. Since then, all Planeswalkers released obtain their abilities when the units digit of their level is 6 or zero : 6, 10, 16, 20, 26, 30, etc. Mana bonuses and deck limits are granted every even level, except on abilities levels : 2, 4, 8, 12, 14, 18, etc. And an amount of HP is added every odd level, or Planeswalker Regeneration : 1, 3, 5, 7, 9 etc. With more recent Planeswalkers, the HP added is lower at low levels, presumably as an additional incentive to level up.