Combos Utilizing Gurzigost

use gurzigost to get rid of your graveyard then gorilla titan. then you'll pay 5 for a 8/8 trample

spend gg and discard obsessive search to have gurzigost deal its damage to opponent this turn. pay madness on obsessive search to draw a card

well since in "reality" you have to have land in play to tap for mana,

have the beads put a card from your library into your graveyard, use the vineyard mana to pay for gurzigost's discard cost, then keep gurzigost alive while your opponent gets milled & mana burned.

whenever you have to discard, the gurzigostgets the cards back the next turn

use whetstone to mill your opponent and pay for gurzi then mill them even more with gurzi's discard ability and the sanctuary for massive mills

attack both big meanies discard a card 2 activate gurziabilty and mill form giant to keep gurzi alive and healthy for another beating

have rofellos, gurzigost and planar portal out and have 9 mana. play crush of wurms. next upkeep put it back into ur library with gurzigost, use planar portal to get cow back and play cow again

use laquatus on yourself, and use the cards in your graveyard to pay gurzigost's upkeep, then the cards go back to your library anyway, so you'll just be replenishing your deck!

get gurzigost in play then morality shift. then arrange your library how you want it