Tiamat'dragon queen

When Tiamat enters the battlefield search your library for up to five dragon creature cards with different names that can't be named Tiamat.
{r}{1} Deal 4 damage to target creature.
{g}{1} Prevent the next 4 damage that would be dealt to target creature.
{b}{1} Deal 4 damage to target planeswalker.
{u}{1} Prevent the next 4 damage that would be dealt to target player or planeswalker.
{w}{1} Deal 4 damage to target player.