how to shuffle mtg commander deck Shalai and Hallar +1/+1 COUNTERS Magic Kinda new to MTG do

Ready to play right out of the box, get 1 Black-Red-Green Graveyard Overdrive deck of 100 Ripple Foil cards (including 2 Borderless Profile Legendary cards), a 2-card Collector Booster Sample Pack (contains 1 Traditional Foil or nonfoil alt-frame card of rarity Rare or higher and 1 Traditional Foil alt-frame 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.

Meanwhile, the other two commanders are solid in specific decks

No player may take any actions between the damage recipient being chosen and the damage being dealt

Losing flash for a better effect greatly reduces the utility of this card for any reactive blue deck

Control the board by repeatedly sacrificing creatures to trigger Plaguecrafter and Mayhem Devil, forcing your opponents into a corner