EDH - Vorel of the Hull Clade (EDH / Commander)

Synergies:

• Kiora, Master of the Depths + Vorinclex, Monstrous Raider / Doubling Season gives access to ultimate right after cast
• Walking Ballista can be used to kill Fatestitcher for another tap/untap effect
• Building up Experiment Kraj with +1/+1 counters and later cast Walking Ballista (less time for opponents to react to possible finisher)
• Master Biomancer / Zameck Guildmage's first ability + Animation Module. As soon as the token ability kicks off, it can be repeated as often as desired for every one man spent.
• Master Biomancer / Zameck Guildmage's first ability gives the tokens from Ezuri's Predation additional counters before they fight
• Fate counters from Oblivion Stone can be multiplied with proliferate to give them to other permanents using Nesting Grounds
• Glen Elendra Archmage + Master Biomancer = repeatable Negate
• Nesting Grounds can be used on Blast Zone to create a token board wipe. Some other cards in the deck can make good use of the moved counter.

Notes:

• Vizier of Tumbling Sands can serve as a combat trick based removal with its cycling ability
• Pemmin's Aura can be used as a creature removal
• All untappers can also be used on own creatures during combat or even on opponents creatures for political plays
• Rishkar, Peema Renegade gives its effect to creatures with any kind of counters, not only +1/+1 counters
• Effects that give single counters should be applied before doubling effects to gain more counters
• Tolaria West can search for Walking Ballista
• Den Protector should not always be held back for the recursion effect because built up with counters it can be a good threat
• Glen Elendra Archmage has an anti synergy with some of the counter multiplying effects
• Inspiring Call can be used as a combat trick and not only as a board wipe protection

Combo - Infinite Mana:

• Pemmin's Aura + Incubation Druid (with counter on it)
• Pemmin's Aura + any creature that can untap other permanents + any permanent that taps for u+1 mana
• Illusionist's Bracers + two of any creatures that can untap other permanents + a permanent that taps for mana

Combo - Opponent board stall:

• Illusionist's Bracers + Fatestitcher + any creature that can untap other permanents

Possible changes:

• Herald of Secret Streams maybe needs to be replaced with a creature that provides more impact and not only serves as a kind of finisher when having a good board state. Replacement should preferably contain green to be tutorable with GSZ. At the moment no such card seems to exist so this is something to watch out for in upcoming sets.