Trample, haste, lifelink.

Whenever The Bloodburn Children deals combat damage to a player, choose one:

•Put a +1/+1 counter on The Bloodburn Children

•Add one mana of any color to your mana pool.

At the beginning of your upkeep, if The Bloodburn Children has 5 or more +1/+1 counters on it, you win the game.