card up your sleeve meaning What Does "Have an Ace Up Your Sleeve" Mean?

We begin our foray into analyzing 3 of the 5 promotional scheme cards for the Magic: The Gathering 3-on-1 Archenemy format!

The Modern Horizons 3 Creative Energy Commander Deck includes 1 deck of 100 Magic cards (2 Traditional Foil Legendary cards, 98 nonfoil 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

Continuous Spell Card Lore: Once per turn, if you Normal Summon a "Yang Zing" monster: You can send 1 "Yang Zing" monster from your Deck to the GY with a lower Level than that monster, but a different name from the cards in your GY

Whenever a permanent you control leaves the battlefield, if it had counter son it, put those counters on target permanent you control