At the beginning of your upkeep, put a +1/+1 counter on each creature you control if you control a creature with power 5 or greater. Then you gain 10 life if you control a creature with power 10 or greater. Then you win the game if you control a creature with power 20 or greater.
The three parts of the ability happen sequentially. For example, if you control a creature with 9 power when the ability starts to resolve, you'll put a +1/+1 counter on each creature you control — and now, since you control a creature with 10 power, you'll gain 10 life.
01-05-2009
wotc
This ability triggers at the beginning of each of your upkeeps. Whether you control any applicable creatures is checked only when the ability resolves.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.