Jayce

• Diamond-Tipped Spear is one of the best items for Jayce.²

Jayce can one-shot squishy champions from afar, but may deal little damage to tanks depending on the matchup.³

• Anvil Jayce with FTB can one-shot many opponents.⁴
• Jayce can receive 25% Omnivamp instead of 15% when switching from Neeko after being offered an Omnivamp shard.⁵⁶
• Fan the Hammer can one-shot Jayce.⁷
• Jayce's E roots and then knocks back.⁸⁹
• Jayce's Hammer E gives 20 stacks of the immobilize effect per champion hit.¹⁰

• The immobilize effect is broken on a number of champions; Jayce's Hammer E gives 20 stacks per champion hit.¹⁰

Earlier formats

• Since patch 14.12, Spellwake works with Jayce's E and Q.¹¹ 8x2 duos
• Slow and Steady converted the attack speed from Jayce's W into AD.¹²¹³ 8x2 duos
• Jayce was ranged regardless of form.¹⁴ 8x2 duos
• Slow and Steady could give Jayce a large amount of AD through ranged W, letting a boosted Q deal heavy damage; the combination was awkward to play.¹⁵¹⁶ 8x2 duos
• Transforming champions such as Jayce properly receive Fame progression.¹⁷ 8x2 duos
• Jayce could burst for Stormraider's trigger and could take the rune.¹⁸ 8x2 duos
• Jayce could delay selecting Slow and Steady until the opposing team left base and could no longer remake.¹⁹²⁰ 8x2 duos
• Jayce's W with Slow and Steady could grant enough attack damage for an empowered Q to one-shot some backliners with damage-taken debuffs; even frontliners could lose half their health to one hit.²¹ 8x2 duos