Trample

Lieutenant — As long as you control your commander, Thunderfoot Baloth gets +2/+2 and other creatures you control get +2/+2 and have trample.

Defender, reach

Creatures you control have haste.

Whenever Undercover Crocodelf deals combat damage to a player, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

Disguise (You may cast this card face down for as a 2/2 creature with ward . Turn it face up any time for its disguise cost.)

Exile target nonland permanent.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I — Each player gets three rad counters.

II — Create X 2/2 black Zombie Mutant creature tokens, where X is the total number of rad counters among players.

III — Put two +1/+1 counters on each creature you control that's a Zombie or Mutant.

Reach

At the beginning of your upkeep, mill a card. (Put the top card of your library into your graveyard.)

, , Sacrifice Vilespawn Spider: Create a 1/1 green Insect creature token for each creature card in your graveyard. Activate only as a sorcery.

Whenever an enchantment you control is put into a graveyard from the battlefield, each opponent loses 1 life.

At the beginning of your end step, if a creature died this turn, venture into the dungeon. (Enter the first room or advance to the next room.)