{2}{G}, {T}, Sacrifice a red creature, a green creature, and a white creature: Search your library for a card named Godsire, put it onto the battlefield, then shuffle.
1 /
1
{G}
Birds of Paradise
Creature - Bird
Flying
{T}: Add one mana of any color.
0 /
1
{4}{R}{G}{G}{W}
Godsire
Creature - Beast
Vigilance
{T}: Create an 8/8 Beast creature token that's red, green, and white.
8 /
8
{R}{G}{W}
Mayael's Aria
Enchantment
At the beginning of your upkeep, put a +1/+1 counter on each creature you control if you control a creature with power 5 or greater. Then you gain 10 life if you control a creature with power 10 or greater. Then you win the game if you control a creature with power 20 or greater.
{R/W}{G}
Naya Hushblade
Creature - Elf Rogue
As long as you control another multicolored permanent, Naya Hushblade gets +1/+1 and has shroud. (It can't be the target of spells or abilities.)
2 /
1
{G}
Noble Hierarch
Creature - Human Druid
Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)
{T}: Add {G}, {W}, or {U}.
0 /
1
{3}{R}{G}{W}
Palladia-Mors, the Ruiner
Legendary Creature - Elder Dragon
Flying, vigilance, trample
Palladia-Mors, the Ruiner has hexproof if it hasn't dealt damage yet.
6 /
6
{3}{R}{G}{W}
Realm Razer
Creature - Beast
When Realm Razer enters the battlefield, exile all lands.
When Realm Razer leaves the battlefield, return the exiled cards to the battlefield tapped under their owners' control.
4 /
2
{G}
Wild Nacatl
Creature - Cat Warrior
Wild Nacatl gets +1/+1 as long as you control a Mountain.
Wild Nacatl gets +1/+1 as long as you control a Plains.