The impending mechanic means it can provide land acceleration and mana fixing as early as turn three, and it can continue to provide value when it attacks after becoming a creature four turns later
Use these self-damaging cards, alongside powerful creatures like Archon of Cruelty or Hullbreaker Horror who can either be cast for free using Rona, Tolarian Obliterators effect, or discarded and reanimated after being dumped into the graveyard by Rona, Herald of Invasion
Result, tons of stuff getting cast without anything other than Jhoira arriving
Not bad, and very flavorful since giving away presents would make friends too
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Triskelion wouldve made this list some time ago, but its Ballistas world now