It's simply a convenient spot to put your experience counters, which can be represented with dice, glass beads, or other small items
After an extensive R&D process, CGC Trading Cards implemented the innovative method that is both protective and aesthetically pleasing
In an effort to streamline this effect a bit and make it a ton easier to track, Baner of Kinship has you pick a creature type when it comes into play, then add a fellowship counter to it for each creature you control of that type
When it's defeated, exile it, then cast it transformed.) When Invasion of Theros enters the battlefield, search your library for an Aura, God, or Demigod card, reveal it, put it into your hand, then shuffle
Card Name Mana Cost Type Sorcery Rarity Uncommon rules Text Vehicles you control become artifact creatures until end of turn
Liliana, Death's Mastery: A very Zombie-friendly planeswalker, even if costed for battlecruiser Standard