You are never forced to activate mana abilities to pay costs, so if there is a mandatory additional mana cost (such as from Thalia, Guardian of Thraben), you can decline to activate mana abilities to pay for it and hence fail to cast the suspended card, leaving it in exile
#MTGxFinalFantasy I'm HONORED to be revealing
Chapter three is still the last chapter, so once that ability is done resolving, you'll sacrifice The Phasing of Zhalfir
If your opponent wants to play lands, which most players do, then you benefit, and they slowly bring themselves closer to decking
The Outlaws of Thunder Junction Most Wanted Commander Deck includes 1 Red-White-Black deck of 100 Magic cards (2 Traditional Foil Legendary cards, 98 nonfoil cards), a 2-card Collector Booster Sample Pack (contains 1 Traditional Foil or nonfoil alt-border card of rarity Rare or higher and 1 Traditional Foil Borderless Uncommon card), 10 double-sided tokens, 1 deck box (can hold 100 sleeved cards), 1 Life Wheel, 1 strategy insert, and 1 reference card