this is an MTG mechanic is 95% of the time only for combos.
on that note: the artwork, your "series" name, and the card names take off of MTG a lot (also for other card ideas you are posting).
doing this not only makes the ideas stray from the purpose of being original and creative for ETG, but also interferes with copyright issues.
(p.s. this is a bad way to get 10 posts, as with my notes above these could be considered spam or low-quality posts)