What are your thoughts on an Elements that's much "softer"?
Example:
Cards that are played (creature, permanents) only last a maximum of 10 turns before going from the field to the bottom of the deck. Spells automatically go to the bottom of the deck after being played.
Effects ("destroy", "steal", stat buffs, healing from spells, etc.) only last a maximum of 10 turns.
If you have no cards in your deck and attempt to draw, you lose 10 HP instead of decking out.
Players heal 10 HP per turn.