Light : Bright indirect sunlight will keep this guy looking awesome.
Water: Let the soil dry out between watering and then give him a big drink.
Humidity: He would really like lots of moisture so keep him with other plants and give him a misting.
Temperature: This guy is not frost tolerant at all and needs to be kept above 16 degrees.
Food: You can feed him once or twice a month in spring and summer. If you see new growth in cooler months then you can feed then too.
Toxicity: Your syngonium is mildly toxic if ingested .