At the end of Morcolt's Turn:
As soon as Vecna reappears (to Morcolt)...
- Morcolt unleashes his arrow and misses! (4+11 = 15), so uses Lucky to reroll and MISSES again! (1+11=12).
- Ready for the shot, Go'ban also releases his arrow and but HITS (17+12=29, note Guardian of Nature grants advantage on DEX and WIS attacks, offsetting disadvantage for Vecna's Invisibility), dealing 9 piercing damage + 5 (Fury of the Small) for a total of 14 damage!
Vecna automatically makes the DC 10 Concentration check to remain Invisible.
Venca uses
Fell Rebuke (reaction #3) on Go'ban, dealing
8 necrotic damage and
teleports away from Morcolt. Fortunately, Go'ban has 10 temporary hits points to take that damage and has 2 remaining.
UPDATE: Broodhuz's uses
Sprit Shield (reaction) to prevent damage to Go'ban,
rolling 13 (4d6),
preventing the 8 necrotic damage to Go'ban.
VECNA'S TURN:
Venca uses
Vile Teleport (bonus action) and lands in the middle of Morcolt, Go'ban, and Broodhuz!
Dealing 9 psychic damage to Go'ban (prevented by Broodhuz, see below) and
9 psychic damage to Broodhuz,
but only 4 damage to Morcolt (due to resistance).
Vecna HEALS 80 hit points!
Update: Broodhuz uses Spirit Guardians (reaction) again to aid Go'ban, rolling 15, preventing the 9 damage to Go'ban. (REVMOED--He has no reaction to do this again.)
UPDATE: Go'ban succeeds on DC 10 Concentration check (17+7 = 24) to keep Guardian of Nature.
Vecna uses
Rotten Fate (action) against Go'ban! Guardian of Nature gives him
advantage on CON saves, and he
succeeds (11,18+7 = 25 vs DC 22), but still takes
54 necrotic damage (half of 108!), with 1 point going to his temporary hp.
UPDATE: Go'ban
fails DC 27 Concentration check (6,14+7 = 21) and
Guardian of Nature is gone.
Venca then
moves 30 feet next to Morcolt and
attacks him twice with Afterthought (part of action)! Vecna
hits both times (25 and 18 total vs AC 18), dealing 8 piercing damage + 14 necrotic and 8 piercing + 9 necrotic, for a total of
19 damage (half of 39 due to resistance to all damage).
Vecna is now visible. He laughs at Morcolt,
"Thanks for the vacation, fool, now it is time for you all to DIE!"
CURRENT HIT POINTS: (CORRECTED)
VECNA: 181 / 272 (+80)
Go'ban: 66 / 132 (+10 - 63); UPDATED after Broorhuz used Spirit Guardians twice, preventing 17 damage.
Morcolt: 101 / 131 (-23)
Broodhuz: 140 / 149 (-9)
Invulnar: 162 / 162
It is now Broodhuz's Turn.