mtg sacrifice a creature draw cards equal to its power Magic the Gathering Adventures: Origins Set Review: Other Rares and Mythics (Green and Artifacts) then discard three cards. Greater Good (Judge) | Promo

Any creatures (or artifacts animated by Karn) capable of producing two mana per tap can pair with Farmstead Gleaner to give Marvin, Murderous Mimic access to infinite +1/+1 counters

While it is a great way to gain a +1/+1 counter and have Estinien Varlineau jump

Dressed in their best detective gear and armed with sophisticated sleuthing tools, the gang is ready to put on their thinking caps, search for clues, and crack the case

You can even discard a card, and combined with specific mechanics, even that can be helpful

I decided to go with Food Chain but there's no reason you couldn't include another combo or even multiple combos that generate infinite mana

The activated ability even provides protection for Kogla and any random Humans you have lying around