You can only activate 1 "Gagagatag" per turn
It was a good sideboard card against aggro decks, and the crew 1 was incredibly easy to meet, meaning the Harvester could help you close out the game in time
For example, you could use a site like MTG Proxy: And gift yourself a set of moxen
You can also buff it using Honest for some aggressive plays
It's a high cost to pay, but Shark Shredder, Killer Clone is already a 4/4, and if you can pull another high-power creature from your opponent's graveyard, you'll be doing huge damage, justifying the initial cost
1 2 "For Parents, It's No Game: Pokemon Plays Hard to Get"