“Hard early if she pokes you out with Q without autoattacking (minions wont aggro her then). You can look for basic combo trade when she goes for a Q. Once she does you should look to E>W her. This is the best opportunity to trade as her combo rotation will be on CD. Verdant Barrier extremely good if they have an ap jgler else I'd suggest rushing Bork for easy oneshot potential on her. Make sure to not use ult if she didnt use her E yet. Mercs are really good aswell vs Syndra.”
“Dodge her lvl 1 Qs and try preserve your hp for level 2. If you get level 2 at the same time as her, do not go on her. If you go on her without windwall she can easily stun you and proc electrocute/phase rush and just walk away. Wait till level 3 in this matchup to windwall the stun and you will easily out trade her. Save windwall for her ulti post 6 or she can end up killing you if you have no MR. Grab an early magic mantle if you really struggle with her damage.”
“Very annoying lane. Focus on farming and ask jungler for help. Her Qs are very easy to land and she gets to have an easy stun. Beware when your HP is below 50% as she can potentially kill you with her ulti. Exhausting her just as she casts her ulti reduces the damage significantly, so consider taking Exhaust.”
“Skill/reaction match up for Syndra. If she E's your W when you're going in for her. She'll beat you, otherwise if she wastes her E, go hard on her.”
“Start Doran + 2 Pots if 1) You think you can outplay her and hit your W's to generate a kill at levels 3-5 or 2) You think she will burst you down post 6 (get an extra ring).
Start Corrupting if you think you will not hit your W's (or you will get poked down) and you rely more on wave clear/spammy poke (you will be way more squisher but more durable -- this is recommended if you are sure you will not get hit by CC spells and instantly die).
Go for the kill pre 6 - try to predict her E's but if she's good she'll know how to instantly E you and that'll be difficult and next to impossible to dodge. Good thing is that happens only at the highest elo.
If you dodge E levels 2-5 you have free time to do face damage so work around that. Post 6 if you are not super ahead or she IS ahead try to get some magic resist because her ult will just melt you.
If she has no R (she used it somewhere else or used it before without killing you) she becomes a relatively easy to kill target - just be careful of her E ! If you dodge that it's over. Her level 1 matches yours on Q poke (might even be better if she sticks behind minions properly), but on a close fight if you position properly your full Q's will triumph. When using WE expect an E to come from her to negate your damage followup and kill potential.
Pick Barrier if you feel you are going to get outplayed by her R.”
“If you can avoid the stun you're golden. Banshee's veil can be worth it if she gets a lead”
“She beats everyone in lane, however she will never match you in the sidelanes. She has more range than you and is really good in 1v1's vs squishy targets like you; so get some MR.”
“I wouldn't buy buy mercs in this matchup but its for sure a good option. I moreso look to get my rocketbelt first so I have proper waveclear. Careful for her lvl 6.”
“Low mobility means you can punish her, but if she ever lands a Q/E you will literally die.
Verdant barrier rush if you fear for your life.
Otherwise go full AP and try to one shot her from range.
PLEASE GO VERDANT BARRIER.”
“Counters all your engages with her E not allowing any flexibility or roaming potential”