(R/G can be paid with either R or G.) 3R, Sacrifice a land: Gruul Guildmage deals 2 damage to target player. 3G: Target creature gets +2/+2 until end of turn.
Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.
Flying, trample At the beginning of your upkeep, sacrifice a creature other than Lord of the Pit. If you can't, Lord of the Pit deals 7 damage to you.
Whenever a creature is put into a graveyard from play, that creature’s controller may draw a card.
Protection from red Elemental creatures you control get +1/+1. When Master of Waves enters the battlefield, create a number of 1/0 blue Elemental creature tokens equal to your devotion to blue. (Each U in the mana costs of permanents you control counts toward your devotion to blue.)
Flash Other Wolves and Werewolves you control get +1/+1. At the beginning of your end step, if you didn’t cast a spell this turn, create a 2/2 green Wolf creature token.
({T}: Add {U} or {B}.) Fetid Pools enters tapped. Cycling {2} ({2}, Discard this card: Draw a card.)
Equipped creature gets +0/+2 and has reach. (It can block creatures with flying.) Equip 2 (2: Attach to target creature you control. Equip only as a sorcery.)
Protection from blue (This creature can’t be blocked, targeted, dealt damage, or enchanted by anything blue.) Whenever Goblin Piledriver attacks, it gets +2/+0 until end of turn for each other attacking Goblin.
Target opponent reveals cards from the top of their library until they reveal a creature card. That player puts all noncreature cards revealed this way into their graveyard, then you put the creature card onto the battlefield under your control.
You may have Body Double enter as a copy of any creature card in a graveyard.
When Mwonvuli Beast Tracker enters the battlefield, search your library for a creature card with deathtouch, hexproof, reach, or trample and reveal it. Shuffle your library, then put that card on top of it.
Flying Whenever a Dragon you control becomes the target of a spell or ability an opponent controls, Thunderbreak Regent deals 3 damage to that player.