Brief guide to Caldie:
Gravitic Dash: The Bus. Dash is only rarely an attack, and is instead your instant disengage. It instantly gives you five sprint seconds of distance (more when upgraded) that can be activated in air and can turn. That’s ridiculous. You can leave fights at will with this and you absolutely should rather than wasting it on a difficult-to-land strike that deals mediocre damage and leaves you point-blank. Only engage with this if you see a weak or easily distracted enemy you can carve down with blades in 3 seconds or less, or if you just flashed a group of minions and want to use the Blade speed buff to carve them up.
It’s also key to nabbing all the neutral shard spawns quickly, which Cald should absolutely be doing every game, every spawn, unless your team has a pre-designated carry. Deny your enemy those resources!
Flashbang: Cald’s best ability. Flashbang should be upgraded with triple + bleed, you should reduce its cooldowns, and it should be liberally sprinkled on everything even mildly bothersome. It turns early minion waves into salad waiting to be chopped, violently interrupts gank spanks on your teammates, and covers outrageous amounts of territory. With triple + AoE upgrades, you can flash the entire central area of Incursion easily.
There is really no excuse for starting any serious fight without a flashbang. I’m dead serious. It needs to be your entrance theme.
Aerial Attack: Despite appearances, this is not Burst’s equal for disengagement - the startup time hurts it there. No, this is your snipe, your coup de grace. It deals far more damage than anything else you can do, and almost no one correctly estimates its speed, distance, and killing power. Sniping an opponent with this and then leaving immediately with Burst is the ultimate fly-by and basically unstoppable.
General Tips
Never use Burst on the ground. You’ll hit something and it’ll end early, every time you need it not to. Burst is air-only - plus, you can lateral-boost after it to frustrate enemy snipers working for the pickoff.
Burst cancels into sword swipes almost seamlessly. Don’t wait to start swiping, if you’re going to chase with Burst. You want to be out of there as soon as possible.
Your base damage is very low. Don’t bother chasing high-health enemies, just dump a clip or two into their back and look for someone else to harass. You don’t match anyone else’s killing power without your Ult and you shouldn’t try.
You’re paradoxically excellent at killing distracted thralls by circling behind them, dropping flash, and then attacking the back weak spot. Help out if someone else is going for the mercs!
Hope y’all get some use from this.
EDIT: It’s worth noting the unique Cald gear, the Sword of Transfusion, gives him 50% of his ult’s damage back as health. I shouldn’t need to point out how stupidly sustainable this makes him in the field, and unless you have an absolutely awesome other Epic, this is your first buy every time. You’ll have the shards for it, I promise.