The best replacement for mtg is yugioh.

The best alternatives to mtg are rated as following:
★★★★★  yugioh
★★★  mtgo
★★★  hearthstone
★★  mega tek
★  arihant
★  sulu
★  wow tcg
  rdn
  sulu max gro

Your alternative for mtg is not listed? Suggest!
Speaking about mtg, one probably shouldn't forget about lands.

Other search terms related to mtg and their ratings are:
★★★★★ lands
You have in mind a companion for mtg and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of mtg in all years. Click on graph for more.
mtg
yugioh
mtgo