For instance, Rhonas the Indomitable only costs 1 green mana with the reduction, and has fantastic stats and abilities with a negligible drawback
Notice that every type of card works for delve, so lands (like a fetch land you sacrifice early) helps to pay the bill
Kefka, Court Mage Rarity: Mythic Rare Card Type: Legendary Creature Human Wizard | Legendary Creature Avatar Wizard Power/Toughness: 4/5 | 5/7 Casting Cost: 2BBR Market Value: $4.97 (Regular), $6.22 (Foil) Along with Vivi, one of the most talked-about commander cards in the Final Fantasy Magic: The Gathering set is Kefka, Court Mage
It's a slow process, but it's an additional way to utilize duplicates
Chukov Standard Legal Alchemy Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
So, having your lands destroyed doesn't have to mean you have access to no mana for the next several turns