Cinderling

Sentry

Murkwolf
Scuttlecrab
Krug

Sentinel
Brambleback
GnarSmall
Cinderling
Sentry
Yorick
Scuttlecrab
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Murkwolf
Krug
Sentinel
Brambleback
GnarSmall
Murkwolf
Scuttlecrab
Sentinel
GnarSmall
Cinderling
Sentry
Krug
BramblebackUse 5 Riftbeast shops to finish your 3* because you want to rush 7 Riftbeast on Level 7 ASAP. You can carry ALL of the riftbeast carries besides Mama Beak if you have items. Krug 3 is the best tank but you can also tank Sentinel 2 > Scuttle Crab 3. Alpha Mark Cinderling early > Crab late.
Slam items aggressively and play for full win streak with Pebbles items. Alpha Mark Crab or Gromp.
Save up econ and try to go level 7 for 7 riftbeast on 3-5, if you're poor wait until 4-1.
Once you have your 3*, level to 8 and field 7 Riftbeast. If you can get to 9, you can ditch 1* Ravagers for Elder Dragon.