Clockwork Swarm [Homelands] Rebel Aura you can Tribute 1 Plant

you can Tribute 1 Plant monster

Set: Legacy of the Valiant Card type: Effect Monster Rarity: Common Attack: 2000 Defense: 0 Cannot be Special Summoned

Set: Secrets of Eternity Card type: Continuous Trap Rarity: Common Once per turn: You can target 1 Machine-Type Xyz Monster you control

Set: Battle Pack 2: War of the Giants Card type: Normal Spell Rarity: Rare Target 1 face-up monster you control

Clockwork Swarm [Homelands] Rebel Aura you can Tribute 1 PlantSet: Homelands Type: Artifact Creature Insect Rarity: Common Cost: {4} Clockwork Swarm enters the battlefield with four +1 +0 counters on it. Clockwork Swarm can't be blocked by Walls. At end of combat, if Clockwork Swarm attacked or blocked this combat, remove a +1 +0 counter from it. {X}, {T}: Put up to X +1 +0 counters on Clockwork Swarm. This ability can't cause the total number of +1 +0 counters on Clockwork Swarm to be greater than four.