card with anti landfall ability

[Play]

how about this card it has new ability anti landfall not sure what to call it yet basically its opposite of landfall

Goblin Barbarian R
Creature - Goblin (Common)
whenever a land leaves the battlefield, put a +2/+2 counter on Goblin Barbarian
1/1

[Alterloth]

This seems like too powerful of a card for a common...and too powerful period...a creature that keeps getting a +2/+2 counter for each land that enters play? Ridiculous...

[Play]

This seems like too powerful of a card for a common...and too powerful period...a creature that keeps getting a +2/+2 counter for each land that enters play? Ridiculous...

it gets +2/+2 for every land that LEAVES play

[Alterloth]

Oops...ok...so, with Ruin Ghost right? This creature could get big if I had a deck and was constantly using Ruin Ghost to exile land (which I do now) to put it back into play for a double landfall effect....alright, I see your point now...

[NyghtShade]

Hrm... I would think make it uncommon and change it to +1/+1 then add stone rain

[Lakepirate]

If it cost R then it would need to be Rare or Mythic. There are too many ways for a land to leave the battlefield (Fetch Lands, Ruin Ghost, Harrow, Land Destruction, Knight of the Reliquary.) If you want to keep it Uncommon I think it should be 2R.