cards with alternate casting costs mtg Do avoid Commander tax? copy it Alternate casting costs clarification :

That said, Jace, Architect of Thought is just too good to share the limelight with Ral Zarek

If you love value, youll play these cards

It is a game mechanic that prevents a card from spells or powers targeting it

9 - Dawns Truce Half Surge of Salvation and half Teferi's Protection, Dawn's Truce allows protecting permanents and combos from removals, yourself from combos and other types of interactions for a lower cost than the most comprehensive card, but also greater than Surge of Salvation

Joining the Quandrix college, they studied how to turn those hydra producing X-spells into even more X-spells

These two cards work quite well together if Karn is Deceiver Exarch, Lattice is Splinter Twin