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.
Initial Deck Shuffling
Your starting hand is entirely random, which can immediately put you at a massive disadvantage against an aggressive opening.

By ensuring a healthy mix of low-cost cycle cards, they guarantee they will always have some form of defense.
Flexibility is a skill.Remove the guesswork from the mid-game.Some RNG is healthy for the game. The Unpredictable AI
Another subtle layer of RNG comes from the slight inconsistencies in how the game's AI handles pathfinding.

Relying on a unit's aggro range down to the exact pixel is risky because tiny bumps can alter their trajectory.
Battler CategoryRandomness ImpactAuto-BattlersSkill comes from long-term statistical managementStandard Tower RushHighly skill-dependent after the first 30 seconds Embracing the Chaos
The best competitors accept the chaos, focus on what they can control, and outplay the opponent regardless.

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