As a side note, remember those few years when only a handful of planeswalkers were around and there was a weird vocal minority of players who refused to play with them based on some imagined ethical high ground
Not only does it add a +1/+1 counter to your creatures that deal combat damage to a player, synergizing nicely with Tidus, but it also gives all creatures you control with counters trample and reach, which are powerful abilities
1 Niv-Mizzet, Dracogenius
After that, budget fetches like Evolving Wilds, Terramorphic Expanse, and Ash Barrens help you hit colors without spending real money
Whether he's a Summon, Esper, Eidolon, or Aeron, Bahamut is one of the most prominent examples of these beings
Unlike many blink strategies, in Esper Self-bounce it's not creatures you want to be bouncing