At the beginning of each opponents upkeep, that player chooses draw step, main phase, or combat phase
It takes some work but can produce an astounding amount of mana in a deck focused around self-mill
It seems players have yet to wake up to the potential behind Amber/Amethyst
In any case, the card is a safe bet for Commander, so you cant go far wrong picking up some copies now
The 15 Best Goblin Cards for Commander Hailing from a classic kindred set, 2002s Onslaught , Goblin Piledriver was a major power player in Standard decks from the era, which were focused on getting as many Gobbies in play as possible and then profiting from this cards second ability that boosts its power based on the number of other attacking Gobs
Timetwister | Illustration by Mark Tedin So, the reserved list is a relic from the old days of Magic