Mono-Red Sligh is heavily red, so all three Hydroblast come in as clean answers, countering a Lightning Bolt or Fireblast aimed at our life total or destroying a resolved Sulfuric Vortex. The extra Spike Feeder adds another lifegain outlet, since removing its own +1/+1 counters gains 2 life at a time, helping us stabilize against their direct-damage clock. Cut the slower Intuition and Sylvan Library, since Sylvan Library's life payment is dangerous against a deck built to burn us out, and two Wall of Roots since Wall of Blossoms alone provides enough early blocking while we want more interactive cards against their low-toughness creatures.