Ghave EDH - More Competitive Combo (EDH / Commander)

Deck utilising a number of combo's.

Combo's
Undying - Young Wolf, Strangleroot Geist, Geralf's Messenger
Mana Producer - Ashnods Altar, Phyrexian Altar, Cryptic Trilobite, Devoted Druid + Swift Reconfiguration

Undying + Ghave, Guru of Spores + Mana Producer = Sacrifice loop of Undying and removing the +1/+1 counter. Doubling Season causes the combo to be more difficult with increased +1/+1 counters needing to be removed.
Doubling Season + Slimefoot, the Stowaway + Ashnod's Altar = Infinite drain effect, pay 4 make 2 saprolings, sac to Ashnod's Altar making 4 mana, repeat.
Doubling Season + Ghave, Guru of Spores + Mana Producer = Arbitrarily large number of; Saprolings, colourless mana, +1/+1 counters.
2 Undying + Yawgmoth, Thran Physician = Card Draw Loop for as long as you have life, add Elas il-Kor, Sadistic Pilgrim to offset the life loss and cause opponents to lose life

The above combo's can also utilise Elas il-Kor, Sadistic Pilgrim and Corpse Knight to kill opponents

Devoted Druid + Tayam, Luminous Enigma + Wax//Wane / Hashep Oasis = Mill Top 3 and return 3 CMC cards to battlefield (repeatable). Devoted druid requires 3 counters to be placed on it (-1/-1) but to create the required mana and counters it needs at least 4 toughness. Outcome of combo, finding other combo pieces.

Devoted Druid + Swift Reconfiguration allows the druid to tap for an infinite amount of green since it is no longer a creature and cannot die to the -1/-1 counters being put on it