
Alpha Authority | Enchantment | Aura | Enchant creature
Enchanted creature has hexproof and can't be blocked by more than one creature. | Dave Kendall

Tower Defense | Instant | | Creatures you control get +0/+5 and gain reach until end of turn. | Seb McKinnon

Nimbus Swimmer | Creature | Leviathan | Flying
Nimbus Swimmer enters the battlefield with X +1/+1 counters on it. | Howard Lyon

Simic Charm | Instant | | Choose one —
• Target creature gets +3/+3 until end of turn.
• Permanents you control gain hexproof until end of turn.
• Return target creature to its owner's hand. | Zoltan Boros

Zameck Guildmage | Creature | Elf Wizard | {G}{U}: This turn, each creature you control enters the battlefield with an additional +1/+1 counter on it.
{G}{U}, Remove a +1/+1 counter from a creature you control: Draw a card. | Chase Stone

Ground Assault | Sorcery | | Ground Assault deals damage to target creature equal to the number of lands you control. | Karl Kopinski

Gruul Charm | Instant | | Choose one —
• Creatures without flying can't block this turn.
• Gain control of all permanents you own.
• Gruul Charm deals 3 damage to each creature with flying. | Zoltan Boros

Skarrg Guildmage | Creature | Human Shaman | {R}{G}: Creatures you control gain trample until end of turn.
{1}{R}{G}: Target land you control becomes a 4/4 Elemental creature until end of turn. It's still a land. | Aleksi Briclot

Burning-Tree Emissary | Creature | Human Shaman | When Burning-Tree Emissary enters the battlefield, add {R}{G}. | Izzy