MAGIC: THE GATHERING
Target creature you control gains +0/+3 and gains hexproof until end of turn. (It can't be the target of spells or abilities your opponent control.)
In decks with just a few creatures, one-mana protection spells are key. Dive Down is an all-star in Standard Mono-Blue Tempo decks, where it can protect Tempest Djinns and Pteramanders from pesky removal spells.