oversized card, not tournament legal.

undercity

secret entrance:

search your library for a basic land card, reveal it, put it into your hand, then shuffle.

forge:

put two +1/+1 counters on target creature.

lost well:

scry 2.

trap!:

target player loses 5 life.

arena:

goad target creature.

stash:

create a treasure token.

archives

draw a card.

catacombs:

create a 4/1 black skeleton creature token with menace.

throne of the dead three:

reveal the top ten cards of your library. put a creature card from among them onto the battlefield with three +1/+1 counters on it. it gains hexproof until your next turn.