CardName: Earthbuster Wurm
Cost: 5GG
Type: Creature - Wurm
Pow/Tgh: 5/5
Rules Text: Trample
Overcharge {3}{G}{G} (You may cast this spell for its
overcharge cost. If you do, skip your next untap step.)
Flavour Text:
Set/Rarity: Card Dump Common
Earthbuster Wurm
C
Creature – Wurm
Trample
Overcharge (You may cast this spell for its overcharge cost. If you do, skip your next untap step.)
So overcharge is like echo but less useful later in the game?
Pretty much, I guess. It also has another cost in the form of your nonland permanents not untapping.