To make a long story short, converted mana cost (also known as CMC) was replaced with the term: mana value. Today I want to take a look at what exactly a mana value is, why this change was made, and some of its most common rules interactions
Carnelian Orb of Dragonkind Rarity: Common TYPE: Artifact SUBTYPE: - CMC: 3 Mana cost: USD: $0.27 EUR: 0.00 TIX: 0.00 EDHREC RANK: 2166 : Add
Creature - Human Cleric Gwaihir, Greatest of the Eagles Flying Whenever Gwaihir attacks, target attacking creature gains flying until end of turn
Its downside is that it cannot answer expensive things well, and you need to be multi-coloured to take advantage of it, but in both Modern and Legacy that isnt an issue as expensive cards arent played as much and most decks are naturally multi-coloured due to the manabases available in these formats
Hell, even the illustrator's name is censored
A Force of Will proxy lets you run this powerful staple across every deck you own without paying secondary market prices