“Avoid bushes and respect his early game. Keep an eye on Rengar's secondary bar. When 3/4 and 4/4, he's dangerous. If he missed combat long enough, he loses his stacks and that's when you trade him. Rengar's W is the main thing that makes him hard. He counters burst fighters... That's you.”
“If it's Rengar top lane, he will be jumping in and out of bushes nonstop. He's going to jump to low health minions to last hit them. Just aim your Q over your low health minions while he's in the bush, so he'll either miss the minion(s) or get hit by your Q for a lot of damage and CC. Your E is pretty effective against him as well, slowing him down enough to not let him get back in the bush right away. If he builds assassin, he shouldn't be able to oneshot you. If he goes tank or bruiser he'll be more of a threat. When he ults away, it's not worth trying to chase him, you won't catch him unless you have a teammate on him. If you can consistently Q him at the right times and time or shield correctly you should be able to win this matchup fairly easily. He's pretty hard to kill though so don't greed for kills, just farm up and you'll be fine.”
“TL;DR - EASY LANE. DON’T TAKE STUPID FIGHTS AT LEVEL 1/2 WHEN HE HAS FEROCITY STACKS. DON’T LET HIM WALK AWAY FROM TRADES. FREE AFTER LEVEL 3. STEELCAPS IF LOSING.
A Rengar matchup depends on how good the Rengar is. Joe Schmoe who builds lethality every game is going to be free food compared to a Dekar but generally speaking, Darius is one of Rengar top’s biggest counters. All you have to do is to make sure he does not cheese you level 1. Just stand outside of his jump range from bushes. If you don’t know the range, just hop into practice tool on Rengar. Level 1, it is best to give up unless you catch him outside a brush. And even then, Rengar wins hard, especially if he has ignite. Respect his 4 stacks.
Once you hit level 3, the lane should be over. If the Rengar keeps playing aggressively and does not adjust his playstyle, he is free food. The second he goes in for a minion, Q-AA-W, pop ghost and then just mess him up. Try to dodge his E root and be mindful of where the Rengar can jump in order to stop him from outplaying you. If he does a W+Empowered W, just E him back. There is no hope for a Rengar to win this lane. What most GOOD Rengars will do is go for W max and essentially beat you out by attrition because a W+W leads to them taking zero damage and you taking more damage than him. Rengar’s tactic would be to utilize his W to cancel your slows and heal back up the damage you deal to him as a way of poking you down. Just don’t let him walk away for free. Land your Es. Phase Rush works but I prefer Conqueror to help me punch through his healing. One last thing is to keep in mind that he is deceptively tanky. If you ult him and it DOES NOT kill him, he will just heal back ALL of the damage if he has his w up. Get Antiheal if his W healing is a problem.”
“In this matchup he'll look to stack his passive and abuse his ferocity empowered Q damage early. Try to pull the wave away from the bushes before they crash. Build bramble vest early to stop him healing through your damage with his W. At level 3 you can take short trades quite easily by timing your E on top of an allied minion about to die.”
“Take Conqueror. You can fight him level 1, but don't even try to fight him when he has 3-4 ferocity stacks. There isn't much of a point in fighting him until you buy a bramble vest because he heals off all the damage you do with his double W, after you have bramble you win. He will probably try to roam after level 6 so make sure you have TP to follow him. Try to group with your team out of lane because he will try to get picks with his ultimate. ”
“In early beating from the bushes can be a nuisance.
When he tries to catch you, use all your skills.
Stun him and destroy your R.”
“Rengar can be a tough TOP laner to go up against if he does go top, he's primarily a JNG. It's quite simple really. Let him win the lane. You can not do anything to him and he is efficiently capable of zoning you out of minion CS range. Just let him push and farm under your tower. Sidestep or use your minions to body block his bolas, or be snared/slowed and chased down. It may be demoralizing but this is what you absolutely need to do to survive this lane, please do not try to be some hero, unless he is mentally incapable of playing the champion correctly by camping bushes, then you lose this HARD. His (R) will reveal you so don't play passive game once he is 6.
“Try to push fast lane don't let him control bushes cuz he will outdamage you so hard. His W is denying your stun and healing him back from all your dmg you dealt to him. Fast rush tabi and and Sheen for kill potential. Your E block his Q.”
“Rengar relies on cheese to lane. Darius is a hard counter to him because Rengar cannot take short trades to burst us down, we just pull him back in and trade better.
Easy lane. Beware of level 1 though.”
“A good Rengar is such an annoying matchup. You win all ins but he can outplay you so hard. First off, give up level 1. He WILL murder you with his empowered Q. Don't even walk up to the lane. If he goes full damage, you blow him up but if he goes W max, you will just not have a good time into him. He can empowered W your ultimate away and just escape with his own ultimate. He will go in, hit you a little bit and then W+W out, healing back all of the damage that he dealt to you. If you can, just pick Darius into him as you hard counter him. But otherwise, just try to make sure he has to overextend from his bushes. Grab minion aggro and make sure they crash a bit far from the bushes so he has a long way to walk when he gets to his bush. Also, NEVER ult him when he has 4 stacks. Ult him AFTER he uses his empowered W ideally or at the very least, after he uses his empowered ability and is at 0 stacks.”