If you've ever sat down to play against a Muldrotha, the Gravetide deck, you'll know the insane advantage that deck has when it can treat its massive graveyard like an extension of its hand
He notes blind spots (selective land kill, stack interaction) and offers picks and a Moxfield package
Le Conte adds that many planets are surrounded by large numbers of moons: "Planets often have many moons (the Earth is special in having just one), such as Jupiter having 97 confirmed at the moment
But after the shock of this new information began to settle, I thought back to my Vileplume
Ignoring the different types of abilities for a moment, an ability is any effect a permanent (land, creature, artifact, enchantment, or Planeswalker) can have on the game