If you cast a spell for another cost "rather than paying its mana cost," you can't choose to cast it for any alternative costs
Effectively, this allows us to play with decks we dont actually own in real life, experimenting with lists built by other players or by ourselves, when we put effort into studying how the deck can run and seeing if its a match with our playstyles
The card must be revealed to activate the Trigger effect, but you can optionally choose to not reveal the card by not activating the effect
If you've kept up with any Magic: The Gathering price movements over the past few weeks, you probably only need to see Graveborn Muse's creature type - zombie - to guess why it's spiking, but it becomes even clearer when you read its effect
If you can jump through the hoop of feeding it a single snow mana, it will not only filter your colors into any color of snow mana, itll also do so at a massive 50% discount.
Razorverge Thicket, Windswept Heath, Rancor, Ethereal Armor, Daybreak Coronet, Unflinching Courage, Path to Exile This hand has a good mix of lands and spells, but is lacking a key card, so you should mulligan