Iymrith, Desert Doom

Flying
Iymrith, Desert Doom has ward as long as it’s untapped.
Whenever Iymrith deals combat damage to a player, draw a card. Then if you have fewer than three cards in hand, draw cards equal to the difference.

Cloister Gargoyle

When Cloister Gargoyle enters, venture into the dungeon. (Enter the first room or advance to the next room.)
As long as you’ve completed a dungeon, Cloister Gargoyle gets +3/+0 and has flying.

Gnoll Hunter

Pack tactics — Whenever Gnoll Hunter attacks, if you attacked with creatures with total power 6 or greater this combat, put a +1/+1 counter on Gnoll Hunter.

Barrowin of Clan Undurr

When Barrowin of Clan Undurr enters, venture into the dungeon. (Enter the first room or advance to the next room.)
Whenever Barrowin of Clan Undurr attacks, return up to one creature card with mana value 3 or less from your graveyard to the battlefield if you’ve completed a dungeon.

Purple Worm

This spell costs less to cast if a creature died this turn.
Ward (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays .)

Minion of the Mighty

Menace
Pack tactics — Whenever Minion of the Mighty attacks, if you attacked with creatures with total power 6 or greater this combat, you may put a Dragon creature card from your hand onto the battlefield tapped and attacking.

Cloister Gargoyle

When Cloister Gargoyle enters, venture into the dungeon. (Enter the first room or advance to the next room.)
As long as you’ve completed a dungeon, Cloister Gargoyle gets +3/+0 and has flying.

Rust Monster

First strike
Sacrifice an artifact: Rust Monster gets +2/+0 until end of turn.

Bruenor Battlehammer

Each creature you control gets +2/+0 for each Equipment attached to it.
You may pay rather than pay the equip cost of the first equip ability you activate each turn.