Appearing exclusively as tokens, and boasting humble 1/1 stats, these fungus-based lifeforms have nevertheless received consistent support throughout the games history, making a dedicated Saproling deck not only viable but potentially extremely powerful in the games premier multiplayer format, Commander
Yes, moving counters from one permanent to a second counts as putting counters on that second card , which matters for effects like Doubling Season or Emperor of Bones
The transformation doesn't necessarily make the card more powerful, but it maintains Flash, adds Double Strike, meaning you double the damage output in combat, and shifts the card draw from opponents drawing two cards per turn to combat damage dealt to players
Battle Battle is the term used for attacking with a creature
but Atraxa is just a goodstuff Commander through and through
The deck has two main goals: to build a large army of human creatures, and to pump the army of humans through dozens of anthem and +1/+1 counter effects, allowing you to attack with a massive army of huge creatures