Rioda, Daughter of Ravens

Whenever a Viking you control deals combat
damage to a player, create a 1/1 blue Bird
creature token with flying.
Whenever one or more Birds you control deal
combat damage to a player, Rioda explores.
(Reveal the top card of your library. Put that card
into your hand if its a land. Otherwise, put a +1/+1
counter on this creature, then put the card back or
put it into your graveyard.)