The best card is probably Termagant Swarm, once again, thanks to its value and flexibility
Green was always fast at producing Mana, but Tinder Wall was a Wall of Wood that could be sacrificed for two Red Mana
Slimefoot and Squee Part of some of Jund's best combos, Slimefoot and Squee is a great friend to bring to parties
Pair it with something that removes -1/-1 counters or adds +1/+1 counters when it comes into play and a free sacrifice outlet like Ashnod's Altar and this creature goes infinite in so many ways
The Mana Base We have 10 mana accelerants to power out our spells should Jeleva fail in its duties
Kefka, Court Mage / Kefka, Ruler of Ruin Flickering Kefka, Court Mage over and over seems like a great way to deprive your opponents of resources