Saphira, Dragonet of Carvahall

Growing Bond—{1}{u}, {t}: Target creature
gains hexproof and +1/+1 until end of turn. If
that creature is a Dragon Rider, put a +1/+1 counter on Saphira, Dragonet of Carvahall.

Rising Might—Whenever Saphira, Dragonet
of Carvahall attacks, if it has power 4 or more,
a Dragon Rider you control gains flying until
end of turn.