In the dense forest of Zendikar, you stumble to find your footing as you slip down a cravasse. Plunging into the jungle, the entangling vines catch your falling body mid-air. Dangling from the canopy, the vines wrap tighter. You feel like a helpless marionette. You cry out for help, but only predators hear. You grab your machete and cut yourself free. The mist below is so thick, it looks like it could be cut as well. Through the dense mist and branches you can faintly perceive movement in the distance. These are the inhabitants of Zendikar, and they surround you.
Savage Instincts is a powerful creature-based Modern format Simic deck.
The deck is creature heavy and aggressive. The deck's core mechanics are Landfall and +1 Counters, The landfall is fueled with fetch-lands, while +1/1 counters are given in many ways including the graft and evolve mechanics.
Undergrowth Champion is an effective blocker that will buy you time for Primordial Hydra to get massive and deal lethal combat damage.
Protect your creatures with Spellskite and Plaxcaster Frogling.
---Savage Sage Combo---
Use Gyre Sage with Increasing Savagery to really ramp up mana. Here's how this combo works: Increasing Savagery places 5 counters on a target creature when it is cast from your hand, and has a Flashback cost for . Each +1/1 counter on Gyre Sage will produce when tapped.Therefore, under the right conditions, Increasing Savagery can be cast twice in one turn, by targeting Gyre Sage then tapping Gyre Sage to Flashback Increasing Savagery; and when it's cast from the graveyard, you get 10 more counters to give any of your creatures.
There are many ways to add counters to your Gyre Sage. Other creatures all have a greater power than Gyre Sage, so if Gyre Sage has no counters, play those cards to the battlefield to trigger the Evolve mechanic.
I also included a copy of Sage of Hours because the card is so much fun. After casting Increasing Savagery onto Sage of Hours, attack with your 7/7 Sage of Hours, then remove it's counters for an extra turn. During your extra turn, flashback Increasing Savagery and attack with your 12/12 Sage of Hours, then remove the counters for two more extra turns.
---Planeswalker---
The Planeswalker is Kiora, Master of the Depths
Use Kiora's +1 ability to untap your Birds of Paradise or Gyre Sage when it has multiple counters on it.
Use Kiora's -2 ability to dig for your creatures and lands: You will often get one of each into your hand, but even if not, if you draw into the cards Tracker's Instincts or Increasing Savagery, you can flashback those from your graveyard.
The -8 ability helps remove late-game creatures that are forcing stalemate.
---Mana Base---
I chose Llanowar Reborn over cards such as Oran-Rief, the Vastwood because cards like Gyre Sage, Primordial Hydra, and Undergrowth Champion need counters as soon as they can get them.
Simic Growth Chamber provides and can be untapped using Kiora.
Miren, the Moaning Well will help you get some value out of your large creatures if your opponent forces you to sacrifice.
Use Windswept Heath and Misty Rainforest to fetch forests and Prairie Stream.
---Sideboard---
In the current build of my deck, I decided to splash white for the cards Qasali Pridemage and Dauntless Escort. Both are creatures, which means Tracker's Instincts and Kiora, Master of the Depths can pick up them up whenever you need to draw a sideboarded card the most.
All the sideboarded creatures; Dauntless Escort, Kitchen Finks, Phyrexian Revoker, and Qasali Pridemage, all have a power or toughness high enough to evolve Gyre Sage.