Marvel Rivals' Season 0, Dooms' Rise, introduced Competitive Play, letting players level 10 and above jump into skill-based matchmaking. Climb the ranks from Bronze, choosing from over thirty characters across Strategist, Duelist, and Vanguard roles. Earn points with every win to progress through rank divisions.
Reach certain ranks to unlock seasonal rewards: cosmetic skins and Crests of Honor (profile emblems showcasing your peak rank). Season 1, Eternal Night Falls, offers the Blood Shield skin for the new Strategist, Invisible Woman.
How to Get Invisible Woman's Blood Shield Skin in Marvel Rivals

Season 1 brought changes, including a new Celestial rank (with three tiers) between Grandmaster and Eternity in Competitive Play. Along with hero adjustments, new seasonal rewards were added: S2 Crest variants (for Grandmaster and above) and the Invisible Woman Blood Shield skin.
To earn Invisible Woman's Blood Shield skin, reach Gold III or higher during the competitive season. Rewards are based on your *peak* rank, not your final rank. Hit Gold III, then drop down? You still get the skin! However, rewards are distributed at the *end* of a season, so you'll receive the skin at the start of Season 3.