Seriously, if new players love Craw Wurm, can you imagine the look on their face when they open a Godsire
Green and red also have good ways to buff creatures, so you can play something like a Giant Growth on your creature before combat then double its power again
Aethertide Whale : Creature (Whale), casting cost of four generic and two blue mana, 6/4
Beginning phase - all previously played cards are readied (untapped), and effects that directly refer to this phase are checked
It is still an instant card, however, and does zero damage to Emrakul, the Promised End due to protection
Green and red can do plenty with extra lands, and red has many tools to increase the damage dealt by ping effects