Meraxes, The White Wyrm

Flying/Trample
[Dragon Bond]
{r/w} Move “Rhaenys, The Kind” from your deck or graveyard to your hand. If from deck, shuffle your deck afterwards.
[Dragon Ward]
As long as this card is in the field, “Rhaenys, The Kind” can't be the target of spells or abilities your opponent’s control.
When Meraxes, The White Wyrm enters the battlefield, destroy all non-Targaryen Dragon and non-High Valyrian creatures.