Random Number Generation, or RNG, is a highly debated topic in almost every competitive video game genre.

However, it still exists in subtle ways that can completely alter the outcome of a very close match.
Starting Hands and Card Rotation
If your opponent rushes the bridge and all your cheap defensive counters are at the bottom of your deck, you lose the tower.

Once the initial hand is played, the rotation becomes fixed, and pure skill and memory take over.
Flexibility is a skill.Remove the guesswork from the mid-game.Some RNG is healthy for the game. The Unpredictable AI
Sometimes a unit will retarget unexpectedly due to a micro-movement by another troop, completely ruining your defensive setup.

To counter this, veterans always place defensive buildings in exactly the same specific tiles to guarantee consistent pulls.
Genre TypeRandomness ImpactAuto-BattlersSkill comes from long-term statistical managementStandard Tower RushVery Low - Only the starting hand is randomized Embracing the Chaos
The most important skill regarding RNG is learning how to control your emotions when luck inevitably turns against you.

Over the course of a thousand games, the luck factor completely evens out for everyone.