Sage of Robust, Stogron

[AUTO]:When this unit is rode upon by a unit with "Solrairon" in its card name, choose a "Sage of Elixir, Eliron" from your soul, and call that card and this card to (RC). [AUTO](RC):When a normal unit is revealed by the ability of your vanguard with "Solrairon" in its card name, this unit gets "[AUTO](RC):At the end of the battle this unit attacked, [COST][retire this unit], and [Counter-Charge 1]." until end of turn.