Changing Runes around

Resolve

Mirror Shell +5 MR Upon taking magic damage that takes you below 30% HP, receive a magic shield for an amount equal to your magic resist. 75 second CD.

Shields Up (renamed from Iron Skin) +5 Armor Upon taking more than 10% your max HP in physical damage in under 5 seconds, receive a physical shield equal to your armor. 75 second CD.

Conditioning +3 armor and 3 MR Upon taking champion damage, permanently take 1 less damage from that source. Max 1 stack per 5 seconds per source, 8 stacks per source (5 for autos, 0.5 damage per stack from DoT).

Sorcery

Blood Pact (replacing Nullifying Orb) Once every 65 seconds, amplify the damage dealt by your next ability by 10%. Take true damage equal to the bonus damage gained from this rune.