Hearth Tech#158What happens if Felsteel Executioner is buffed by Valanyr

Potion is cast 4 times by Solar Eclipse you play 2 Solar Eclipses, your next spell is not cast twice you replace Genn Greymane at Mulligan, he will be disabled by C’Thun, the Shattered Horror copied from opponent casts for opponent Pursuit is disabled when your board is full Clone triggers when your board is full happens if Felsteel Executioner is buffed by Val’anyr？