ManaBase.com

Phantom Whelp
{1}{U}
Creature -- Illusion Dog
2/2
When ~this~ attacks or blocks, return it to its owner's hand at end of combat. (Return it only if it's on the battlefield.)

Quicksilver Behemoth
{6}{U}
Creature -- Beast
4/5
Affinity for artifacts (~this~ costs {1} less to cast for each artifact you control.)
When ~this~ attacks or blocks, return it to its owner's hand at end of combat. (Return it only if it's on the battlefield.)

Windscouter
{3}{U}
Creature -- Human Scout
3/3
Flying
When ~this~ attacks or blocks, return it to its owner's hand at end of combat. (Return it only if it's on the battlefield.)