Undergrowth

If an ally died this round, deal 4 to a unit.

Create copies in hand of 2 allied followers that have died this game.

If 3+ allies have died this round, summon Vilemaw.

Kill an ally with Last Breath to summon a follower from your deck that costs 1 more.

Revive a random ally that died this round.

Obliterate all units that were summoned, but not played, this round.

Toss 3. Heal all allies 3.

Summon an exact copy of an ally. It's Ephemeral and 1|1.

Pick a follower from the top 4 cards in your deck. Draw it, place the rest into your deck, then create an exact Ephemeral copy in hand.

Summon two Ghastly Bands.

Kill an ally to deal damage equal to its Power to an enemy.