Hippo DIY (EDH / Commander) [Revision 2]

(-) Elemental Bond
(+) Guardian Project
While this won't help any tokens that are created, a lot of the creatures in the deck has 2 or less power which means you're drawing cards off of less than half of your creatures.

(-) Exploration
(+) Dryad of the Ilysian Grove
Dryad of the Ilysian Grove has the same ability as Exploration, fixes mana in the off chance its relevant and costs 3 which makes it more appealing for Keruga.

(-) Favor of the Overbeing
(+) Azusa, Lost but Seeking
If you're blinking creatures then having a non-recurrable aura feels like it won't be effective. The deck doesn't have a lot of ability to get land onto the battlefield that we're drawing so adding Azusa should help with that.

(-) Growing Rites of Itlimoc
(+) Fierce Empath
While Growing Rites will tap for extra when it flips, we don't have a lot of ways of maximizing its effectiveness. If its here for a creature tutor then Fierce Empath being blinkable fits that role better.

(-) Vow of Flight
(-) Vow of Wildness
(+) Selvala, Heart of the Wilds
(+) Shamanic Revelation
If we're playing the Rishadan Pirates then our opponents are likely going to sacrifice the creatures that we've enchanted. While these are great for politics, they're not effective as removal and don't recur themselves.

(-) Rancor
(+) Blade of Selves
While I like Rancor (Recurring Aura) I wanted to try to fit in Blade of Selves somewhere considering its explosive value with ETBs and Panharmonicon.

(-) Farseek
(-) Rampant Growth
(-) Search for Tomorrow
(-) Unexpected Results
(+) Ranger's Path
(+) Migration Path
(+) Explosive Vegetation
(+) Skyshroud Claim
While this can make it a bit more difficult to ramp from 2 to 3, it does make it more likely that we'll be able to cast more than one spell for turn more quickly as each ramp spell is now a two for one.

(-) Diligent Farmhand (Though I was tempted to add Muscle Burst just for laughs)
(+) Joraga Treespeaker
Both Diligent Farmhand and Treespeaker require the same amount of mana to be effective and while Treespeaker dies to removal it adds more ramp and late game can enable your other elves.

(-) Migratory Greathorn
(+) Thassa-Deep Dwelling
With only two mutation creatures in the deck it makes it difficult to really justify the pick whereas Thassa will enable consistent blinking for the deck's theme.

(-) Parcelbeast
(+) Thragtusk
Other than Loxodon Warhammer there is nothing in the deck to provide lifegain. Thragtusk leaving behind a body when it dies to help to go a bit wider solves two problems at once.

(-) Terastodon or Thrashing Brontodon
(+) Kogala, The Titan Ape
While there is a decent amount of stuff that deals with artifacts and enchantments, there isn't a lot that deals with creatures. Kogala as a blink target helps with that, has niche support for bouncing Witness/Venser and when attacking can blow up artifacts and enchantments.

(-) Vizier of Many Faces
(+) Equilibrium or Cloudstone Curio
While I love Vizier, there are already clones in Clever Impersonator and Progentior Mimic which will allow for either a bunch of tokens or unique clone targets. Equilibrium or Curio also enables us to have another bounce engine especially with flash creatures like Whelk/Mystic/Snake/Venser