It's Siv

Shroud
Equip {2} ({2} :Siv hops on the shoulders of target creature. Equip as a sorcery.)

Equipped creature gets +1/+2 as Siv throws empty bottles of Lucozade at the target and also they get Equip {3} ({3}:Equipped creature also hops on the shoulders of another target creature. Equipped creature gets +3/+3. Equip as a sorcery.)