If its a character, the player can play the card for free no matter the cost, so its a big gamble
The odds of opening a mythic rare are lower than opening a regular rare, and these cards are often much stronger than other cards at other rarities
You can destroy any creature with a mana value of 2 or less, and together with fetch lands you can remove any creature with a MV up to 4
In general, creature-based ramp cards are slightly cheaper mana-wise than their land-based equivalents, but theyre also much more fragile
This isn't going to be a staggered release
This shift has created a significant power vacuum, with format-defining staples like Sheoldred, the Apocalypse, Monastery Swiftspear, and efficient one-mana removal spells like Cut Down now gone