It doesnt require Giants per se, but it does work well with them though it works well with any five-toughness creature
Then there's that meme about 15 squirrels beating Emrakul, the Aeons Torn, at least Frog-Squirrels can reach Emrakul
One of these viable options is Yveltal, and its ability to synergize with other single-prize Pokmon that place damage counters makes it an intriguing option
Over the last decade, there have been multiple on-going debates, to whether MTG alters are legal in DCI sanctioned events
They can try their best to get under three creatures before it triggers, but if they are doing that, youre still drastically altering their game plan This format does have a lot of tokens to double, but not very many +1/+1 counters