This mechanic from the 2009 set Zendikar triggers when a land comes into play under your control, giving you some sort of benefit like life gain or a +1/+1 counter on a creature
Artifact decks in particular have received a lot of love as of late, with all sorts of cards printed in the last few months tat could boost your gadgets and doohickeys to a new level
Moorland Haunt resolves, creating a 1/1 spirit and triggering Cathars' Crusade again
Ok Aladdin & Genie - Mischievous Pals #232 (Lorcana Attack of the Vine) Details All prices are the current market price
The number of times Ive sunk a bunch of mana into getting The Reaver Cleaver attached to a creature, only to swing in, generate a ton of Treasure, and play out another full turns worth of spells is innumerable
If this creature gets enough -1/-1 counters put on it to cause it to go to the graveyard, modular will put a number of +1/+1 counters on the target artifact creature equal to the number of +1/+1 counters on this creature before it left the battlefield