Kheru Spellsnatcher isn't a bad trick to play, but it's a tad expensive and doesn't play well with Zimone
But then, you have to pay seven whole mana to get it back onto the battlefield, which is a huge price to pay for a creature with no built-in protection
Since your opponent's creatures will have damage marked on them from this spell already, you can assign less damage to each one that blocks and trample over for more damage to your opponent
Giving it Escape is a fun twist, but you need to be careful which cards you exile to Escape it or else your card may become less powerful
If you have no intention of continuing the subscription, you can simply activate the trial, claim all the benefits and then cancel 24 hours before the trial is over and if you do that, you will not be charged
The only issue here is that most new players may find it difficult to know what makes a good deck and which cards you should pick or avoid