If you Special Summon “Guardian Tryce”, you don’t get to activate his effect when he’s destroyed, even if you Tribute Summoned him previously and are using “Monster Reborn” on him later.
You must Special Summon the exact same card that was Tributed for “Guardian Tryce” when using his effect; you cannot Special Summon a card of the same name.
You cannot use “Guardian Tryce”’s effect to Special Summon a “Special Summon-only” monster that had not been properly Summoned, such as a Fusion Monster that was Special Summoned with “Magical Scientist” and then Tributed for “Guardian Tryce”.
You cannot Special Summon “Dark Ruler Ha Des” with “Guardian Tryce”’s effect.
You can Special Summon a monster in your opponent’s Graveyard if it was used to Tribute Summon “Guardian Tryce”.
If “Guardian Tryce” is an Equip Spell Card equipped to “Relinquished” or “Sword Hunter”, and “Guardian Tryce” is destroyed and sent to the Graveyard, his effect activates.
If “Guardian Tryce” is Set and is destroyed, his effect activates.
Netrep Rulings:
If the monster Tributed to Tribute Summon “Guardian Tryce” is not in the Graveyard when “Guardian Tryce” is destroyed, that monster will not be Special Summoned.
The owner of “Guardian Tryce” will receive “Guardian Tryce’s” Special Summoning effect, regardless of who controlled “Guardian Tryce” when it was destroyed.