Jelsay, Town Beastmaster

Creatures you cast have convoke.
Whenever a creature you control becomes tapped, if that creature is not attacking, search your library for a creature card and put it into your hand. Shuffle your library afterward. Otherwise, that creature gains lifelink until end of turn.
{w}{u}{r}{g}: Other creatures you control get +1/+0 and trample until end of turn. Untap them.