Players can't respond to your choice of a +1/+1 counter or haste
Rowans Talent is extremely powerful not for the loyalty ability it adds, but because it allows its controller to copy the loyalty abilities of the enchanted planeswalker, essentially activating them twice
It's an artifact with ", Sacrifice this token: Draw a card.") Whenever you draw your second card each turn, create a 1/1 white Spirit creature token with flying
Equipment you control have equip
If one of the creatures is an illegal target and the other one isn't as The Earth Crystal's last ability tries to resolve, the original distribution of counters applies and the counter that would have been put on the illegal target is lost
Generally, those commanders make up for the lack of card velocity inherent in running a lot of small ramp cards by being engines themselves, and in that case, you should include a lot of two-cost ramp to accelerate your gameplan