Maybe, by the end of this review, Ill have answered that for you
At best, Chart a Course is a better Nights Whisper, as you dont lose two life for having the ability to draw two cards for two mana and the only extra price is being able to attack with a creature
Cost reducers do indeed stack
Card Categories When you start building a deck, I suggest opening up your commander's page here on EDHREC, and firing up the Archidekt deckbuilding tool before anything else
Note that Kadena's Silencer only counters abilities , not spells, but countering a strong enters-the-battlefield ability happens often and should be good enough
(Each in the mana costs of permanents you control counts toward your devotion to blue.) Creatures and enchantments you control have "Spells your opponents cast that target this permanent cost more to cast." Creatures and enchantments you control have "Spells your opponents cast that target this permanent cost more to cast." Legendary Creature Enchantment - Demigod Ring of Evos Isle : Equipped creature gains hexproof until end of turn