Reflecting Pool - [Foil, Promo] Judge Gift Cards 2019 (J19){T}: Add one mana of any type that a land you control could produce. Does it reflect the future that once was or the past that can never be?

the Walking Grave deals combat damage to a player

wilderness guide

Whenever River Kelpie or another permanent enters the battlefield from a graveyard

or land card

Enchant land Enchanted land has "{T}: Create a 1/1 green Squirrel creature token

master glassblower

[−9]: Nicol Bolas

forge of the Darksteel Eye

{T}: Put target Zombie card from your graveyard on top of your library

you create a Treasure token

or land you control

Debilitating Injury