Scary Tyrant Build.....
Tyrant with gutgouger with might is right, ghyran artefact for +1 to hit and +1 to wound and rolling on the right name or a 6 on the name chart = every 3 to wound is 6 dmg...possible 18 dmg going through = profit.
Slap a gravetide down in front as you slog up the board for a better save..
Alternative choice is the above but the +2 damage artefact from ghur..every 4 to wound would be 8 dmg..correction...the 2 dmg is added before the ability is applied so it would be every 4 to wound is 10 damage...jesus..maybe get emerald swarm in there to keep him alive..since you picekd ghyran if you end up playing in ghyran it would heal d6 a turn..use the butcher also to keep him alive...could make a list that revolves around keeping the tyrant alive just possibly doing 30 dmg a combat phase (with perfect and lucky rolls)