mtg cards that reduce activation cost Is there a way to this activate to zero? Reducing cost of Triggered Abilities

Read all of the cards that come into play and take time to understand them

Kasimir the Lone Wolf Rarity: Uncommon TYPE: Legendary Creature SUBTYPE: Human Warrior CMC: 6 Mana cost: USD: $2.55 EUR: 3.24 TIX: 0.00 EDHREC RANK: 28939 (5/3) Keepers of the Faith Rarity: Common TYPE: Creature SUBTYPE: Human Cleric CMC: 3 Mana cost: USD: $0.33 EUR: 0.61 TIX: 0.00 EDHREC RANK: 30515 (2/3) Kei Takahashi Rarity: Uncommon TYPE: Legendary Creature SUBTYPE: Human Cleric CMC: 4 Mana cost: USD: $8.15 EUR: 7.15 TIX: 0.00 EDHREC RANK: 29523 (2/2) : Prevent the next 2 damage that would be dealt to target creature this turn

INCLUDES 3 PLAY BOOSTERSEach scene box also comes with 3 Play Boosters

Let's just hope they don't drop a Ghostly Prison