If a creature enters the battlefield as a copy of or becomes a copy of a creature whose blitz cost was paid, the copy won't have haste, won't be sacrificed, and its controller won't draw a card when it dies
In sanctioned events: player-made proxies are not allowed (with narrow, judge-issued exceptions)
Most importantly, both of these creatures reanimate something when they die
It cant attack the same player multiple times, but the trick to making it shine is triggers at the beginning of the combat phase
While its remarkable how the community worked around the asinine limitations to develop a thriving economy, you cant help but wonder how much healthier the MTGO economy would have been if Wizards had implemented proper auction and trading systems found in every major MMO game
It gives you extra land drops and rewards you for playing lands, which is exactly what this deck wants once it starts trying to chain big spells together