28 cards where the color identity ≤ RU and the mana value <= 2 and the card types include “instant” and (the set is “war” or the set is “grn” or the set is “rna” or the set is “m20”)

Aether Gust (Core Set 2020 #42)
Anticipate (Core Set 2020 #45)
Chandra's Pyrohelix (War of the Spark #120)
Chandra's Triumph (War of the Spark #121)
Dazzling Lights (Guilds of Ravnica #34)
Disdainful Stroke (Guilds of Ravnica #37)
Electrodominance (Ravnica Allegiance #99)
Essence Capture (Ravnica Allegiance #37)
Fry (Core Set 2020 #140)
Heartfire (War of the Spark #131)
Infuriate (Core Set 2020 #145)
Jaya's Greeting (War of the Spark #136)
Lazotep Plating (War of the Spark #59)
Mission Briefing (Guilds of Ravnica #44)
Nahiri's Stoneblades (War of the Spark #139)
Narset's Reversal (War of the Spark #62)
Negate (Core Set 2020 #69)
Quench (Ravnica Allegiance #48)
Radical Idea (Guilds of Ravnica #52)
Samut's Sprint (War of the Spark #142)
Scorchmark (Ravnica Allegiance #113)
Shock (Core Set 2020 #160)
Storm Strike (Ravnica Allegiance #119)
Sure Strike (Guilds of Ravnica #118)
Tale's End (Core Set 2020 #77)
Teferi's Time Twist (War of the Spark #72)
Unexplained Disappearance (Guilds of Ravnica #56)
Unsummon (Core Set 2020 #78)

Their mind whirled with grand plans, never thinking of what might happen if they got to the end of the list.