Tantrum, Sacrificial Lambs (Mystic + Survivor)

The idea behind this deck is to have Tantrum outlast opponents. Prioritizing maintaining health and obtaining more tokens for summoning whump. Blocks can be used to protect whump so that he can last until the end of level preventing boss damage.

Level 1
Shadowcaster forces attacks on themself keeping Tantrum's health at a decent level.
Zanni, Nobody's Fool can also assist with keeping Tantrum's health up, because she can't be attacked she can stay longer through levels if needed.

Level 2
Bobby Brushbacks also has a block feature plus when he dies the first time he comes back with a +1 attack counter
Chirp, Teammate has the ability to add attack counters to bobby or to Zanni for early hard hitters.

Level 3
Bleargh, Noxious Entity its Bleargh! He attacks for free for a total of 2. If he gets that the Effin' SLingshot he can hit harder.
Effin' Slingshot can help beef up the low hitters and and potentially make them free swings.
Kat Five can be used to gain a significant amount of tokens if sequenced right. These tokens can help for summoning whump and blocking.
Lyra, Silken Assassin has a free response block.
Reika, First Novice also has a free response block as well as can attack for free.

Level 4
Sanyang, Unerring Gaining tokens is always a plus. She can be a potential heavy hitter.

Level 6
Just Elias, Protector can divert blows so tokens can be used for attacking instead of summoning whump.

Response
Cache Money more tokens are good tokens
Stay Hydrated gaining health is always good

Tactic
Theurgic Thrashing heavy hit plus healing