To display the trinket on 5 stacks and off cooldown.
Import this one first:
Code:
Version:4.20; icon:warrior_talent_icon_furyintheblood; buffname:Raw Fury; x:369; stacks:5; inVehicle:0; stacksOperator:=; off:true; y:221; ismounted:0
that tracks the stack of buffs. Since you don't want it to display, shift click it off (it should say "Off" over it in the /powa menu).
Then import this one:
Code:
Version:4.20; icon:inv_misc_cat_trinket08; buffname:Fury of Angerforge; x:449; bufftype:7; alpha:1; owntex:true; inVehicle:0; combat:true; size:0.48; y:-125; texmode:2; ismounted:0
edit it, and in the box under "Fury of Angerforge" you need to put the ID of the Stacking Buffs Power Aura. To grab that, go to the power auras menu (/powa) and hover over the stacks aura. You'll see something like "[12]Buff". The 12 is the number you want to put in the box. This links them together.
e: You can freely edit the 2nd one to display however you like, just keep that "12" (yours will probably different) so they stay linked