companion cards mtg How does the "companion" ability work in a deck? You get an emblem with whenever a creature enters the battlefield under your control MTGNexus - Loyal Companion

For that, I am eternally grateful

Then again, you could very easily turn this to your advantage in a deck focused on manipulating your life total

The Tinker Time March of the Machine Commander Deck set includes 1 ready-to-play Green-Blue-Red deck of 100 Magic cards (2 Traditional Foil Legendary cards, 98 nonfoil cards), 10 Planechase cards, 1 six-sided planar die, a 2-card Collector Booster Sample Pack (contains 1 Traditional Foil or nonfoil special treatment card of rarity Rare or higher and 1 Traditional Foil special treatment Common or Uncommon card), 1 Foil-Etched Display Commander (a thick cardstock copy of the commander card with foil etched into the cards border and art), 10 double-sided tokens, 1 deck box (can hold 100 sleeved cards), 1 Life Wheel, 1 strategy insert, and 1 reference card.

The ending ability is also a lot of fun

You do need to tailor the deck to contain the Necro but once you can support it it gives you immense power