Best Gruul Card Payoffs In terms of devotion, anything with devotion to green like Renata, Called to the Hunt or red like Purphoros, God of the Forge can count your color pips
It also can be cast by sacrificing a creature, a good alternative if you play a Nested Shambler or if your opponent is running some Pacifism like So Shiny or Captured by Lagacs

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Since delve cards consume one resource (cards in your graveyard), they dont work well together
2 Ghalta And Mavren + Jumbo Cactuar Two Cactuars Are Better Than One Having one Jumbo Cactuar is great, but what if you had two