Red Slaad

Double Strike
When Red Slaad deals damage to a creature put an red egg counter on that creature.
At the begining of your upkeep destroy all creatures with red egg counters on them, create that many 0/1 Slaad Tadpole creature token with "{4}{u}{b},{t}, sacrifice this creature: Search your library for Blue Slaad, put it onto the battlefield tapped"