pokemon cards started how to get with How to start playing Pokemon TCG from scratch: a beginner's guide History of Pokemon Cards -

The flavor text does not have anything to do with gameplay

Its fairly common to see issues arise from players relying on a die to determine the size of a Tarmogoyf on the battlefield and not noticing that it changed

Is this a boring choice

Warriors tend to be small, so this is more chip damage than anything, but all your pump effects are accounted for here

If your deck benefits from life gain but doesn't need it then any card in the cube with any life gain potential that you want in your deck has surprisingly higher value than you might think

You may choose only a creature or planeswalker thats already on the battlefield