In that case, Malleable Impostor simply enters the battlefield as a 0/0 creature and is probably put into your graveyard immediately, unless something else is increasing its toughness to keep it alive
+1: Untap up to one target creature
Hymn of Rebirth being Green/White is a nice combination of the 'good' resurrection colours
If its your job to apply pressure, you cant waste draw steps with things like Relic when you need to find Blade Splicers
Dawn Charm Dawn Charm seeks to overcome the inherent Fog weakness with modality, though those modes are also rather weak
Each box includes 12 Collector Boosters, and each pack has 15 cards with 0-3 Surge Foils, 9-12 Traditional Foils, five rares or mythics, and a Full-Art land