Clockwork Avian (German) - "Mechanischer Vogel" [Renaissance] Bird Cleric and the hive thundered

and the hive thundered

each creature you control attacking a player gets +1/+0 until end of turn for each creature that player controls

Whenever a creature you control dies or is put into the command zone

"You gotta be pretty smart to live long as me

Clockwork Avian (German) - "Mechanischer Vogel" [Renaissance] Bird Cleric and the hive thunderedSet: Renaissance Type: Artifact Creature Bird Rarity: Uncommon Cost: {5} Flying Clockwork Avian enters the battlefield with four +1 +0 counters on it. At end of combat, if Clockwork Avian attacked or blocked this combat, remove a +1 +0 counter from it. {X}, {T}: Put up to X +1 +0 counters on Clockwork Avian. This ability can't cause the total number of +1 +0 counters on Clockwork Avian to be greater than four. Activate only during your upkeep.