Helm of Chatzuk [Summer Magic / Edgar] Treasure you play one of those

you play one of those corporations and work together in the terraforming process

Set: Beta Edition Type: Enchantment — Aura Rarity: Rare Cost: {1}{G} Enchant creature

Set: Ravnica: City of Guilds Type: Enchantment Rarity: Rare Cost: {4}{G} If an effect would create one or more tokens under your control

If a source would deal damage to you

cards that accelerate and intensify the diseases' activity

Helm of Chatzuk [Summer Magic / Edgar] Treasure you play one of thoseSet: Summer Magic Edgar Type: Artifact Rarity: Rare Cost: {1} {1}, {T}: Target creature gains banding until end of turn. (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding a player controls are blocking or being blocked by a creature, that player divides that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)