edhseer Commander synergy, explained
Legendary Planeswalker — Karn
Mana cost: {4}
Create a tapped Powerstone token.
activated +1 — makes a token
Pay any amount of mana. Look at that many cards from the top of your library, then put one of those cards into your hand and the rest on the bottom of your library in a random order.
activated −1 — searches a library
activated −1 — puts cards into your hand
You get an emblem with "Tap an untapped artifact you control: This emblem deals 1 damage to any target."
activated −7 — gets an emblem
Causes: create a Powerstone artifact token, put a Powerstone artifact token onto the battlefield, search your library.
Cares about: nothing.
a planeswalker is cast — 361 cards in the game can cause this (Karn is one).
When Karn, Living Legacy is cast:
239 other cards care about it too. These are the ones with the most connections.
a planeswalker enters the battlefield — 366 cards in the game can cause this (Karn is one).
2 other cards care about it too. These are the ones with the most connections.
a token enters the battlefield — 3,710 cards in the game can cause this (Karn is one).
When a Powerstone enters thanks to Karn, Living Legacy:
3 other cards care about it too. These are the ones with the most connections.
a token is created — 3,711 cards in the game can cause this (Karn is one).
When Karn, Living Legacy makes a Powerstone token:
17 other cards care about it too. These are the ones with the most connections.
an artifact enters the battlefield — 4,643 cards in the game can cause this (Karn is one).
When a Powerstone enters thanks to Karn, Living Legacy:
55 other cards care about it too. These are the ones with the most connections.
anything enters the battlefield — 26,499 cards in the game can cause this (Karn is one).
When a Powerstone enters thanks to Karn, Living Legacy:
35 other cards care about it too. These are the ones with the most connections.