Undercity Sewers [Murders at Karlov Manor] Frog (You may reveal a Lesson

(You may reveal a Lesson card you own from outside the game and put it into your hand

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

Whenever another permanent enters the battlefield under your control

you’ll find a cool tech sticker and promo card featuring one of three Shiny Pokémon

Undercity Sewers [Murders at Karlov Manor] Frog (You may reveal a LessonSet: Murders at Karlov Manor Type: Land Island Swamp Rarity: Rare (T: Add U or B.) Undercity Sewers enters the battlefield tapped. When Undercity Sewers enters the battlefield, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)