Creature - Human Druid Warrior 2/2, 3G (4) At the beginning of your end step, if you control a creature with power 5 or greater, you may draw a card. {T}: Add {1} to your mana pool.1 "I feel the vine-rhythm as my friends drive the beast to me. I will not miss my mark."
Illus. Jim Murray
10/1/2008: The first ability has an "intervening 'if' clause." That means (1) the ability won't trigger at all unless you control a creature with power 5 or greater as your end step begins, and (2) the ability will do nothing if you don't control a creature with power 5 or greater by the time it resolves. (It doesn't have to be the same creature as the one that allowed the ability to trigger.) Power-boosting effects that last "until end of turn" will still be in effect when this kind of ability triggers and resolves. An ability like this will trigger a maximum of once per turn, no matter how many applicable creatures you control.