Because who has time to track down paper invitations in five different stores
In this instance, that's Awakened Skyclave, a 4/4 Elemental Land with Vigilance and Haste
He just got an I block update Judge (DRI 167) has the G regulation mark
However, in terms of gameplay, there may be better options available depending on the specific strategy of the deck, such as cards with more versatile effects or lower mana costs
Pir's Whim is a generic great card that is worth considering in basically any Green deck
Notorious TeamTron member, Henrik Has-Never-Been-Defeated-In-Old-School-Magic-In-Denmark Storm and I, tried to boil down a definition, but the closest we ever got was something along the lines of: A synergy between two or more cards, that is easily disruptable . I dont think that is very precise nor a very useful definition, because by this definition you will open a way too broad aspect of the game to being combo