One of the most powerful synergies you can have with this excellent Bant card is to sacrifice it to an effect like Birthing Pod, getting a 4-drop into play and then putting Derevi into play from the command zone, so it ETBs and untaps the Birthing Pod, allowing you to do it again
Take this next pair of decks from my past as points of comparison: Creatures (1) Planeswalkers (5) Lands (26) Spells (28) This deck is setting up a long loop of control, and it can absolutely get out of the realm of danger by building up mana, drawing cards with Sphinxs Revelation, and doing it again with Elixir of Immortality to a point where it likely to be under any threat of death and has copious answers to any possible ability of an opponent to threaten it
Tergrid was very popular in Rakdos Aggro and Dimir Control decks, and it looks like the similar role will be occupied by Gisa in the new standard
Commander decks are always packed with mana rocks, and what better way to take advantage than nabbing them from your opponents whenever they tap them for mana
Named after the card of the same name, Polymorph tends to get low mana creatures onto the field, generally tokens, so your deck only has hits of powerful creatures that you can polymorph the tokens into