Due to rules updates, this answer has been modified.
If a spell or ability would deal damage to a player, the controller of that spell or ability may, during resolution, redirect all of the damage to a planeswalkers the opponent controls.
If a creature attacks, the attacking player must declare, for each attacking creature, if that creature is attacking the defending player or a planeswalkers that player controls. They may still be blocked as normal.
The previous answer mentioned playing your own planeswalker with the same sub-name to "counteract" the opponent's planeswalker. This rule no longer exists and each player may have a planeswalker with the same sub-name under their control.
No, you don't.
Yes, you can do a spell that destroys a planeswalker, or when you play a spell that deals damage to a player you can do that to a planeswalker, or when you attack you can just attack it instead. Basically a planeswalker is a player whose life is equal to the amount of loyalty counters on him/her and when it gets dealt damage remove that many loyalty counters from it. If it had 0 loyalty counters it goes to the graveyard. This confused me, too for a while.
Yes, you can target a planeswalker with Lightning Bolt.
No, a planeswalker is not considered a creature in Magic: The Gathering.
No, a planeswalker is not considered a spell in Magic: The Gathering.
Planeswalker loyalty in Magic: The Gathering is significant because it represents the strength and influence of a player's planeswalker card. The loyalty counters on a planeswalker card determine its abilities and how long it can stay on the battlefield. Players must strategically manage their planeswalker's loyalty to maximize its impact on the game.
Yes, a planeswalker is considered a permanent in Magic: The Gathering.
No, Kraj cannot use planeswalker abilities in an experiment.
The target of this spell or ability can be a creature, player, or planeswalker.
In the game of Magic: The Gathering, combat damage dealt to a player does not affect a planeswalker directly. However, a player can choose to redirect combat damage from creatures to a planeswalker they control if they wish. This can potentially damage or destroy the planeswalker.
Lifelink on a planeswalker card in Magic: The Gathering allows the planeswalker to gain life equal to the damage dealt when it deals damage. This can help the planeswalker stay in the game longer by increasing its life total, making it harder for opponents to defeat.
Yes, a planeswalker is considered a nonland permanent in Magic: The Gathering.