Show Only Guru Approved Combos
Hadana's WeaverHadana's Climb Buy + Spike Weaver Buy
Pretty sweet eternal fog
Codex of BrighthearthCodex Shredder Buy + Rings of Brighthearth Buy
It's fairly expensive, but meant for any EDH deck as an alternate means of recursion.
1. Sacrifice Shredder to return a card. Trigger Rings.
2. Pay Rings cost to copy Shredder ability, target Shredder.
3. Shredder returns to hand, then initial activation returns other card to hand.
4. Cast Shredder. Repeat as desired.
Net: : Return target card from your graveyard to your hand.
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.
Scout Coralhelm Growth ChamberRetreat to Coralhelm Buy + Llanowar Scout Buy + Simic Growth Chamber Buy
Have the Llanowar Scout in play with the Retreat to Coralhelm. Play a land for turn, then tap Llanowar Scout to put Simic Growth Chamber onto the battlefield, let the Retreat to Coralhelm untap the Scout and put the land you just bounced into play. Repeat this with a second Simic Growth Chamber or other bounce land for lots of landfall triggers.
Pauper Infinite Red ManaSafehold Elite Buy + Ivy Lane Denizen Buy + Thermopod Buy
Project X in Gruul??
Infinite IncubationVigean Graftmage Buy + Incubation Druid Buy
Have Vigean Graftmage in play, and summon Incubation Druid, placing a +1/+1 counter. on it. Incubation Druid taps for 3 blue mana, and untap it with Vigean Graftmage for 1 and 1 x blue mana. Rinse and repeat.
Wall of WizardsWall of Reverence Buy + Vizkopa Guildmage Buy + Exquisite Blood Buy
Life for you and Life lose for them
Pauper: dump your library and loose (or not)Nomads en-Kor Buy + Cephalid Aristocrat Buy
With both in play you may put any pair number of cards from your library into your graveyard!! loose or use this engine for a dredge win ([card/] Haunting Misery [card] for example)
Grinning Smoke EngineGrinning Ignus Buy + Paradox Engine Buy + Smokebraider Buy
Have all in play.
1. Tap Braider for
2. Use to bounce Ignus
3. Use other from Braider and the two colorless to cast Ignus
4. Engine untaps Braider
Remaining is not restricted and you are back to start. Nets infinite , storm count, ETB/LTB triggers, and untaps all your other nonland permanents.
Panglacial StormRooftop Storm Buy + Arcane Adaptation Buy + Panglacial Wurm Buy
Pretty simple really. With the two enchantments in play, naming Zombie for Arcane Adaptation Buy, search your library at the end of your opponent's turn (any fetchland will do it). Whilst searching you can cast all four Wurms for free, pointing 36 trample damage at your opponent next turn.