@PJI have you tried the Augur of skullsgrim harvest
engine? it has done well in u/w/b blink maybe it could work here.
edit oh and ALWAYS extirpate guile they play very few win conditions taking 4 away helps alot
i tried augur of skulls cutting phyrexian ironfoot's place, finishing 2nd in 90+ players tournament. its good almost against all decks. RG will waste their incinerates on augur of skulls instead of shadowmage infiltrator...
play tombstalker, he is one of the best finisher. dont play dralnu with him! shapeshifter and brine are better with him or even Arcanis. dralnu is very fragile in the current meta, its dangerous to sacrifice permanents... grapeshot, incinerate, seal of fire and more...
i tried augur of skulls cutting phyrexian ironfoot's place, finishing 2nd in 90+ players tournament. its good almost against all decks. RG will waste their incinerates on augur of skulls instead of shadowmage infiltrator...
but if it attacks? he deals 1 damage right?