Magical Hack [Limited Edition Alpha] Mercadian Masques and that player can't activate

and that player can't activate abilities that aren't mana abilities

Set: Time Spiral Timeshifted Type: Creature — Zombie Rarity: Rare Cost: {2}{B}{B} Zombie spells you cast cost {1} less to cast

−3: Target opponent's life total becomes 10

Set: Champs and States Type: Instant Rare Cost: {G}{U}{U} Counter target spell

Set: Iconic Masters Type: Legendary Creature — Praetor Mythic Cost: {8}{U}{U} Flash At the beginning of your end step

Magical Hack [Limited Edition Alpha] Mercadian Masques and that player can't activateSet: Limited Edition Alpha Type: Instant Rare Cost: {U} Change the text of target spell or permanent by replacing all instances of one basic land type with another. (For example, you may change "swampwalk" to "plainswalk." This effect lasts indefinitely.)