Twisted Biomancer

When Twisted Biomancer enters the battlefield, you have ten seconds to search your library for two creatures with converted mana cost 2 or less, then put them onto the battlefield with their power, toughness, mana cost, and text boxes combined as one card.
{u/b},{t}: Choose a keyword ability. Combined creature gains that keyword ability until end of turn. (Trample, Haste, etc.)