Tarnished Warrior

Elden Lord - Whenever you cast a Greater
Rune, Tarnished Warrior gets First Strike
and +X/+X this Turn, where X is the
Number of active Runes.

Runic Ascension - At the beginning of your upkeep, if theres no active Runes, search your Library for a Greater Rune, put it onto the Battlefield, then shuffle. Else, empower one of your active Runes by 1