
IndestructibleIndestructibleDamage and effects that say "destroy" don't destroy it.
As long as your devotion todevotion toYour devotion to a colour is the number of mana symbols of that colour among the mana costs of permanents you control. white and black is less than seven, Athreos isn't a creature.
Whenever another creature you own diesdiesA creature dies when it goes from the battlefield to a graveyard. Being exiled or returned to hand is not dying., return it to your hand unless target opponent pays 3 life.
Hover an underlined rule to see what it means.
Read from the rules text. A card that enables a keyword makes or is the thing; a card that rewards it gets better when you have it. Two cards interact when one enables what the other rewards.