This opponent is colorless and plays essentially no blue cards, so Force of Will is almost entirely dead since you'll rarely have a legal, worthwhile target and paying the alternate cost just burns your hand for nothing. Carpet of Flowers won't trigger off their Islands since they don't play any, so it's mentioned here only to note it's not a reasonable include either, but there is no better use for the freed-up slots given how narrow your interactive sideboard options are against a colorless prison/ramp deck. Your best line is simply to ignore Trinisphere and Chalice-style taxes where possible and race to assemble Aluren or Show and Tell before Urza's Saga or Karn, the Great Creator lock you out, since none of your sideboard cards meaningfully interact with The One Ring, Ugin, Eye of the Storms, or their artifact mana engine. Mulligan aggressively for fast starts and treat this as a pure speed matchup.