Jetmir, Nexus of Revels (Showcase Golden Age Gilded Foil) [Streets of New Capenna]Set: Streets of New Capenna Type: Legendary Creature Cat Demon Rarity: Mythic Cost: {1}{R}{G}{W} Creatures you control get +1 +0 and have vigilance as long as you control three or more creatures. Creatures you control also get +1 +0 and have trample as long as you control six or more creatures. Creatures you control also get +1 +0 and have double strike as long as you control nine or more creatures.

put Kjeldoran Outpost onto the battlefield

gain control of all nonland permanents your opponents control until end of turn

but it is sometimes also a matter of opportunity

Set: Sun & Moon: Unified Minds Type: Item Rarity: Secret Rare

Set: Introductory Two-Player Set Type: Creature — Imp Rarity: Common Cost: {1}{B} Flying (This creature can't be blocked except by creatures with flying or reach

Set: EX: Dragon Frontiers Type: Colorless Rarity: Rare Retreat cost: Colorless

Dragons your team controls have double strike

Set: Antiquities Type: Artifact Creature — Bird Rarity: Rare Cost: {5} Flying

Set: Monarch Unlimited Edition: Unlimited Finish: Rainbow Foil Type: Equipment Subtype: Chest Rarity: Legendary Class: Light Whenever you pitch a Light card

Set: Judge Gift Cards 2010 Type: Sorcery Rarity: Rare Cost: {2}{G}{G} As an additional cost to cast this spell

Set: Magic Player Rewards 2009 Type: Instant Rarity: Rare Cost: {1}{U} Counter target noncreature spell

How much Energy is too much