Colossus Rider

You excel at fighting opponents significantly larger than yourself, effectively disrupting their efforts.

Ability Score Increase. Increase your Strength or Dexterity score by 1, to a maximum of 20.

Giant Grappler:

• You ignore all size restrictions when making a Grapple attack.
• When you attempt a Grapple attack against a creature that is two or more sizes larger than you, the target has disadvantage on its saving throw to avoid the Grapple.

Pinning Strike:

When you successfully Grapple a creature that is two or more sizes larger than you, they do not gain the Grappled condition. Instead, you can choose one of the following effects, which lasts until the start of your next turn. At the start of each of your subsequent turns, you may choose a different option, provided you maintain the Grapple:

1. Slow: Reduce the creature's movement speed by half.
2. Hinder: The creature has Disadvantage on its attack rolls.
3. Blind: You cover the creature's eyes, imposing the Blinded condition.
4. Vantage: You are secured on the creature and have Advantage on attack rolls made against it.

Secure Hold: You have Advantage on any saving throw or contested roll made to resist being removed from the larger creature.