Some Old Dogs(cards)but w/ New Tricks (Rules Text)Portcullis Buy + Wormfang Crab Buy + Mulldrifter Buy
Thanks to improvements on wording over the years, Portcullis Buy becomes clearer to read, and how it works has become easier to understand.
With 2 other creatures in the battlefield(not necessarilly yours), evoke Mulldrifter Buy, and the like, get the etb effect, then exile them w/ Portcullis. Then we cast Wormfang Crab to "flicker" Portcullis. This lets you get another etb and ltb trigger from any cards exiled w/ portcullis.. which includes Wormfang Crab. Rinse, Repeat.