Bogles relies on hexproof creatures like Slippery Bogle, Gladecover Scout, and Silhana Ledgewalker, which our spells and abilities can't target, so our answers need to be non-targeted. Auras on them don't change that, because hexproof stays on the creature. Drown in Sorrow's -2/-2 sweeps the small hexproof bodies and any unenchanted Eldrazi Spawn tokens from Malevolent Rumble without needing to target anything, so it is our best answer. Tragic Slip stays in the sideboard: it can't target any of their hexproof threats, even with Morbid active, and that leaves only Eldrazi Spawn and Warrior tokens as targets, which isn't worth a slot. Rite of Consumption stays in because it targets the player rather than a creature, so hexproof doesn't matter and it gives us reach. Unearth is weaker here since the opponent's game plan is building one evasive threat rather than going wide, and the sweepers will be killing our own small creatures anyway, so we trim it for the proactive sweeper effects. Keep the full sacrifice engine otherwise intact, as racing with Carrion Feeder and Bloodthrone Vampire growth while occasionally sweeping their board is our best path to beating a single overgrown Armadillo Cloak or Ancestral Mask threat.