Narset's Reversal [War of the Spark Prerelease Promos] Avatar Vampire Noble put a number of charge

put a number of charge counters on Vexing Puzzlebox equal to the result

Set: Mystery Booster Playtest Cards Type: Enchantment — Aura Rarity: Rare Cost: {2}{G} Enchant two creatures

Memnarch understands

Set: Commander Masters Type: Land Rarity: Rare Training Center enters the battlefield tapped unless you have two or more opponents

Narset's Reversal [War of the Spark Prerelease Promos] Avatar Vampire Noble put a number of chargeSet: War of the Spark Prerelease Promos Type: Instant Rarity: Rare Cost: {U}{U} Copy target instant or sorcery spell, then return it to its owner's hand. You may choose new targets for the copy. "In the disarray of battle, an enemy's attack may be your most convenient weapon." Narset