Activated abilities contain a colon. They're generally written "[Cost]: [Effect]." Some keywords are activated abilities; they have colons in their reminder text.

Trazyn the Infinite gains only activated abilities. It doesn't gain keyword abilities (unless those keyword abilities are activated), triggered abilities, or static abilities.

If an activated ability of a card in a graveyard references the card it's printed on by name, treat Trazyn the Infinite's version of that ability as though it referenced Trazyn the Infinite by name instead.